Philippines. The National Library & Bibliographic Services Division. (1989). Directory of printers and publishers. Bibliographic Services Division, The National Library of the Philippines.
Dyfyniad Arddull ChicagoPhilippines. The National Library and Bibliographic Services Division. Directory of Printers and Publishers. Manila: Bibliographic Services Division, The National Library of the Philippines, 1989.
Dyfyniad MLAPhilippines. The National Library and Bibliographic Services Division. Directory of Printers and Publishers. Bibliographic Services Division, The National Library of the Philippines, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.