एपीए उद्धरण

Philippines (Commonwealth) Army. (1939). Map and aerial photography reading (1939 ed.). Manila: Bureau of Print.

शिकागो स्टाइल उद्धरण

Philippines (Commonwealth) Army. Map and Aerial Photography Reading. 1939 ed. Manila: Bureau of Print, 1939.

एमएलए उद्धरण

Philippines (Commonwealth) Army. Map and Aerial Photography Reading. 1939 ed. Manila: Bureau of Print, 1939.