Philippines & Sibal, J. A. R. (1983). The Philippine labor code and labor administration in the Philippines: Rules and regulations. Central Lawbook.
Chicago Style aipamenaPhilippines and Jose Agaton R. Sibal. The Philippine Labor Code and Labor Administration in the Philippines: Rules and Regulations. Quezon City: Central Lawbook, 1983.
MLA aipamenaPhilippines and Jose Agaton R. Sibal. The Philippine Labor Code and Labor Administration in the Philippines: Rules and Regulations. Central Lawbook, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.