APA (7th ed.) Citation

National Library (Philippines). (1974). Philippine national bibliography. National Library of the Philippines.

Chicago Style (17th ed.) Citation

National Library (Philippines). Philippine National Bibliography. Manila: National Library of the Philippines, 1974.

MLA (9th ed.) Citation

National Library (Philippines). Philippine National Bibliography. National Library of the Philippines, 1974.

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