APA (7th ed.) Citation

Duldulao, M. D. The Filipinos: Portrait of a people. Oro Books.

Chicago Style (17th ed.) Citation

Duldulao, Manuel D. The Filipinos: Portrait of a People. Philippines: Oro Books.

MLA (9th ed.) Citation

Duldulao, Manuel D. The Filipinos: Portrait of a People. Oro Books.

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