Philippines & National Book Store. Editorial Staff. (1979). Presidential decrees on labor and social legislation with labor code, social security act, new GSIS law, new medicare law, and other laws, with implementing regulations. National Book Store.
Chicago-viite (17. p.)Philippines ja National Book Store. Editorial Staff. Presidential Decrees on Labor and Social Legislation with Labor Code, Social Security Act, New GSIS Law, New Medicare Law, and Other Laws, with Implementing Regulations. [Manila]: National Book Store, 1979.
MLA-viite (9. p.)Philippines ja National Book Store. Editorial Staff. Presidential Decrees on Labor and Social Legislation with Labor Code, Social Security Act, New GSIS Law, New Medicare Law, and Other Laws, with Implementing Regulations. National Book Store, 1979.