Cita APA (7th ed.)

(1944). Davao, Philippine Islands (2nd ed.). Army Map Service.

Cita Chicago (17th ed.)

Davao, Philippine Islands. 2nd ed. Washington, D.C: Army Map Service, 1944.

Cita MLA (9th ed.)

Davao, Philippine Islands. 2nd ed. Army Map Service, 1944.