Cita APA (7th ed.)

Retizos, I. L. (1957). Philippines who's who. Capitol Pub. House Inc.

Cita Chicago (17th ed.)

Retizos, Isidro L. Philippines Who's Who. Quezon City: Capitol Pub. House Inc, 1957.

Cita MLA (9th ed.)

Retizos, Isidro L. Philippines Who's Who. Capitol Pub. House Inc, 1957.