APA (7th ed.) Citation

Catapusan, B. T., & Diaz-Catapusan, F. E. (1971). Philippine problems. Malaya Publishing House.

Chicago Style (17th ed.) Citation

Catapusan, Benicio T., and Flora E. Diaz-Catapusan. Philippine Problems. Manila: Malaya Publishing House, 1971.

MLA (9th ed.) Citation

Catapusan, Benicio T., and Flora E. Diaz-Catapusan. Philippine Problems. Malaya Publishing House, 1971.