Cita APA (7a ed.)

Philippines (Republic). The National Library. (1974). Philippine national bibliography. Jan.-Feb. 1974-. The National Library.

Cita Chicago Style (17a ed.)

Philippines (Republic). The National Library. Philippine National Bibliography. Jan.-Feb. 1974-. Manila: The National Library, 1974.

Cita MLA (9a ed.)

Philippines (Republic). The National Library. Philippine National Bibliography. Jan.-Feb. 1974-. The National Library, 1974.