Sibal, J. A. R. (1997). Philippine labor jurisprudence and practice (5th ed.). Central Lawbook Publishing.
Citace podle Chicago (17th ed.)Sibal, Jose Agaton R. Philippine Labor Jurisprudence and Practice. 5th ed. Quezon City: Central Lawbook Publishing, 1997.
Citace podle MLA (9th ed.)Sibal, Jose Agaton R. Philippine Labor Jurisprudence and Practice. 5th ed. Central Lawbook Publishing, 1997.
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