APA (7th ed.) Citation

Romulo, C. P. (1962). The challenge of excellence and other addresses. University of the Philippines.

Chicago Style (17th ed.) Citation

Romulo, Carlos Pena. The Challenge of Excellence and Other Addresses. Quezon City: University of the Philippines, 1962.

MLA (9th ed.) Citation

Romulo, Carlos Pena. The Challenge of Excellence and Other Addresses. University of the Philippines, 1962.