Ferrer, M. M. (1972). The inter-departmental reference service. Philippine Journal of Public Administration.
Cita Chicago (17th ed.)Ferrer, Maxima M. "The Inter-departmental Reference Service." Philippine Journal of Public Administration 1972.
Cita MLA (9th ed.)Ferrer, Maxima M. "The Inter-departmental Reference Service." Philippine Journal of Public Administration, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.