APA (7th ed.) Citation

Duldulao, M. D. (1987). The Filipinos: Portrait of a people. Oro Books.

Chicago Style (17th ed.) Citation

Duldulao, Manuel D. The Filipinos: Portrait of a People. Phils: Oro Books, 1987.

MLA (9th ed.) Citation

Duldulao, Manuel D. The Filipinos: Portrait of a People. Oro Books, 1987.