APA (7e ed.) Bronvermelding

Romulo, C. P., & Romulo, B. D. (1988). The Philippine presidents: Memoirs of Caros P. Romulo. New Day Publishers.

Chicago (17e ed.) Bronvermelding

Romulo, Carlos Peña, en Beth Day Romulo. The Philippine Presidents: Memoirs of Caros P. Romulo. Quezon City: New Day Publishers, 1988.

MLA (9e ed.) Bronvermelding

Romulo, Carlos Peña, en Beth Day Romulo. The Philippine Presidents: Memoirs of Caros P. Romulo. New Day Publishers, 1988.