APA (7th ed.) Citation

De Guzman, E. (1974). The population situation and the need for population education. Population Institute, University of the Philippines System.

Chicago Style (17th ed.) Citation

De Guzman, Eliseo. The Population Situation and the Need for Population Education. [Manila: Population Institute, University of the Philippines System, 1974.

MLA (9th ed.) Citation

De Guzman, Eliseo. The Population Situation and the Need for Population Education. Population Institute, University of the Philippines System, 1974.