Cita APA (7th ed.)

Subong, N. L. (1976). The teaching difficulties of elementary school teachers of modern mathematics in some selected public schools of Manila [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago (17th ed.)

Subong, Nieva Liboria. The Teaching Difficulties of Elementary School Teachers of Modern Mathematics in Some Selected Public Schools of Manila [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.

Cita MLA (9th ed.)

Subong, Nieva Liboria. The Teaching Difficulties of Elementary School Teachers of Modern Mathematics in Some Selected Public Schools of Manila [microform]. Photoduplication Service. University of the Philippines Library, 1976.