APA aipamena

Wester, P. J. Mindanao and the Sulu Archipelago: Their natural resources and opportunities for development (2nd rev. ed.). Bureau of Printing.

Chicago Style aipamena

Wester, Peter Johnson. Mindanao and the Sulu Archipelago: Their Natural Resources and Opportunities for Development. 2nd rev. ed. Manila: Bureau of Printing.

MLA aipamena

Wester, Peter Johnson. Mindanao and the Sulu Archipelago: Their Natural Resources and Opportunities for Development. 2nd rev. ed. Bureau of Printing.