Cita APA (7th ed.)

Thonghem, P. (1977). Problems encountered by public elementary school principals in Quezon City in the implementation of the work-oriented curriculum [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago (17th ed.)

Thonghem, Poonsri. Problems Encountered by Public Elementary School Principals in Quezon City in the Implementation of the Work-oriented Curriculum [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Cita MLA (9th ed.)

Thonghem, Poonsri. Problems Encountered by Public Elementary School Principals in Quezon City in the Implementation of the Work-oriented Curriculum [microform]. Photoduplication Service. University of the Philippines Library, 1977.