Quick survey using DuckDuckGo in order as they appear — Trilogy does well — and no one else has the idea of “full-spectrum” HUMINT at the management level, Wikipedia gets it partly right at the source level.
— HUMINT, a syllabic abbreviation of the words HUMan INTelligence, refers to intelligence gathering by means of interpersonal contact, as opposed to the more technical intelligence gathering disciplines such as SIGINT, IMINT and MASINT. NATO defines HUMINT as “a category of intelligence derived from information collected and provided by human sources.” . . . Within the context of the U.S. Military, most HUMINT activity does not involve clandestine activities.
2010-07-10 Human Intelligence (HUMINT) Trilogy Updated
— Intelligence for the President–AND Everyone Else, as published in CounterPunch, Weekend Edition, February 27 – 1 March 2009
— Human Intelligence (HUMINT): All Humans, All Minds, All the Time(US Army Strategic Studies Institute), June 2010
2011-06-05 Human Intelligence in Counterinsurgency: Persistent Pathologies in the Collector-Consumer Relationship (Small Wars Journal)
— Excellent discussion of the various pathologies found in US military industrial-era HUMINT.
2005-01-13 True Intelligence Reform Is Cultural, Not Just Organizational Chart Shift (RAND Commentaries)
–“The need for creative thinking runs directly into the need to reform secrecy and compartmentalization.”
2012-08-21 All-in-One Signals and Human Intelligence (SIGNAL Online)
— Army's big idea, neither SIGINT nor HUMINT have the linguists to come close.
2006-10-06 FM 2-22.3 (FM 34-52) HUMAN INTELLIGENCE COLLECTOR OPERATIONS (US Army)
— 1-6. A HUMINT source is a person from whom information can be obtained. The source may either possess first- or second-hand knowledge normally obtained through sight or hearing. Potential HUMINT sources include threat, neutral, and friendly military and civilian personnel. Categories of HUMINT sources include but are not limited to detainees, refugees, DPs,local inhabitants, friendly forces, and members of foreign governmental and non-governmental organizations (NGOs).
2007-03-01 Colonel Ralph O. Baker, USA, HUMINT-CENTRIC OPERATIONS: Developmeint Actionable Intelligence in the Urban Counterinsurgency Environment (Military Review)
— …we neither understood nor anticipated the inadequacy of our conventionally designed intelligence collection and analysis system.
2004-05-02 J. David Galland, Iraq Intelligence Failure Was Unavoidable (DefenseWatch Magazine posted to Pravda.ru)
— The greatest problem that has directly contributed to shoddy information collection, regrettably confused for quality intelligence, was painfully predictable. Because of the nether-world trappings and demands of clandestine human intelligence (HUMINT) operations, our agencies years ago ran out of spies who can function in the nasty back alleys of the globe without compromise.
Handbooks: HUMINT (11)