Cita APA (7th ed.)

Estrada, A. (1948). The philosophy of law. U.S.T. Press.

Cita Chicago (17th ed.)

Estrada, Antonio. The Philosophy of Law. Manila: U.S.T. Press, 1948.

Cita MLA (9th ed.)

Estrada, Antonio. The Philosophy of Law. U.S.T. Press, 1948.