APA (7e ed.) Bronvermelding

Alsaybar, D. B. (1976). Demands on the time of the principalship in selected private secondary schools in the Philippines [microfilm]. Photoduplication Service, University of the Philippines Library.

Chicago (17e ed.) Bronvermelding

Alsaybar, Delfe B. Demands on the Time of the Principalship in Selected Private Secondary Schools in the Philippines [microfilm]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.

MLA (9e ed.) Bronvermelding

Alsaybar, Delfe B. Demands on the Time of the Principalship in Selected Private Secondary Schools in the Philippines [microfilm]. Photoduplication Service, University of the Philippines Library, 1976.