APA (7th ed.) Citation

National Library. Bibliography Division & Del Rosario, I. A. (1978). Directory of publishers and printers. Bibliography Division, National Library of the Philippines.

Chicago Style (17th ed.) Citation

National Library. Bibliography Division and Iluminada A. Del Rosario. Directory of Publishers and Printers. Manila: Bibliography Division, National Library of the Philippines, 1978.

MLA (9th ed.) Citation

National Library. Bibliography Division and Iluminada A. Del Rosario. Directory of Publishers and Printers. Bibliography Division, National Library of the Philippines, 1978.