De Guzman, R. P. (1976). Principal management needs and major training objectives in the public sector in the ESCAP region. Research & Publications Program, College of Public Administration, University of the Philippines.

De Guzman, Raul Policarpio. Principal Management Needs and Major Training Objectives in the Public Sector in the ESCAP Region. Manila: Research & Publications Program, College of Public Administration, University of the Philippines, 1976.

De Guzman, Raul Policarpio. Principal Management Needs and Major Training Objectives in the Public Sector in the ESCAP Region. Research & Publications Program, College of Public Administration, University of the Philippines, 1976.