Cita APA (7th ed.)

De Guzman, F. S. (1981). The status of cognitive development research in the Philippines. Science Education Center, UP.

Cita Chicago (17th ed.)

De Guzman, Fe S. The Status of Cognitive Development Research in the Philippines. Quezon City: Science Education Center, UP, 1981.

Cita MLA (9th ed.)

De Guzman, Fe S. The Status of Cognitive Development Research in the Philippines. Science Education Center, UP, 1981.