Abelardo, F. E., Ingles, J. Y., Patacsil, P. C., & Carlos, A. P. (2002). The Classification scheme for Philippine government publications (Revised edition.). LISCO Multipurpose Cooperative.
Lua i Stíl Chicago (17ú heag.)Abelardo, Fe E., Jacinta Y. Ingles, Perla C. Patacsil, agus Andrea P. Carlos. The Classification Scheme for Philippine Government Publications. Revised edition. Makati City: LISCO Multipurpose Cooperative, 2002.
Lua MLA (9ú heag.)Abelardo, Fe E., et al. The Classification Scheme for Philippine Government Publications. Revised edition. LISCO Multipurpose Cooperative, 2002.
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