Cita APA (7th ed.)

Oblepias, V. R. (1977). Contraception by surgery. New Day.

Cita Chicago (17th ed.)

Oblepias, Virgilio R. Contraception by Surgery. Quezon City: New Day, 1977.

Cita MLA (9th ed.)

Oblepias, Virgilio R. Contraception by Surgery. New Day, 1977.