APA (7e ed.) Bronvermelding

Castillo, A. V. (1949). Philippine economics. [s.n.].

Chicago (17e ed.) Bronvermelding

Castillo, Andres Villegas. Philippine Economics. Manila: [s.n.], 1949.

MLA (9e ed.) Bronvermelding

Castillo, Andres Villegas. Philippine Economics. [s.n.], 1949.