Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C21679
Notes:
Pages 109-118 in K. Sadanandan Nair and Shirley A. White (eds.), Perspectives on development communication. Sage Publications, Inc., Thousand Oaks, California. 256 pages.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C14038
Notes:
Chapter 7 in Crispin C. Maslog, Philippine Communication: an introduction. Philippine Association of Communication Educators, Los Banos. 1988. 375 pages.