APA Citation

Robert de Roos. (1966). The Philippines Freedom's Pacific Frontier. Washington, D.C: National Geographic Society.

Chicago Style Citation

Robert de Roos. The Philippines Freedom's Pacific Frontier. Washington, D.C: National Geographic Society, 1966.

MLA Citation

Robert de Roos. The Philippines Freedom's Pacific Frontier. Washington, D.C: National Geographic Society, 1966.

Warning: These citations may not always be 100% accurate.