APA (7th ed.) Citation

(1981). Philippine National Bibliography 1980. The National Library of the Philippines.

Chicago Style (17th ed.) Citation

Philippine National Bibliography 1980. Manila: The National Library of the Philippines, 1981.

MLA (9th ed.) Citation

Philippine National Bibliography 1980. The National Library of the Philippines, 1981.

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