Tapales, P. D. (1998). Course reader: PM 251 (introduction to local government and administration). University of the Philippines Open University.
Čikaški stil citiranja (17. izdanje)Tapales, Proserpina Domingo-. Course Reader: PM 251 (introduction to Local Government and Administration). Quezon City: University of the Philippines Open University, 1998.
MLA način citiranja (9. izdanje)Tapales, Proserpina Domingo-. Course Reader: PM 251 (introduction to Local Government and Administration). University of the Philippines Open University, 1998.
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