Eala, Q. A. (1961). Philippine bibliographic services and a Pacific basin system of scientific information centers. s.n.].
Cita Chicago (17th ed.)Eala, Quintin Ayson. Philippine Bibliographic Services and a Pacific Basin System of Scientific Information Centers. [Manilan: s.n.], 1961.
Cita MLA (9th ed.)Eala, Quintin Ayson. Philippine Bibliographic Services and a Pacific Basin System of Scientific Information Centers. s.n.], 1961.
Atenció: Aquestes cites poden no estar 100% correctes.