Philippines & CBSI Editorial Staff. (1999). Electrical, mechanical, civil, chemical, geodetic, sanitary, and agricultural engineering laws in the Philippines and related laws (1999 9th ed.). Published and distributed by Central Book Supply.
Cita Chicago (17th ed.)Philippines i CBSI Editorial Staff. Electrical, Mechanical, Civil, Chemical, Geodetic, Sanitary, and Agricultural Engineering Laws in the Philippines and Related Laws. 1999 9th ed. Manila: Published and distributed by Central Book Supply, 1999.
Cita MLA (9th ed.)Philippines i CBSI Editorial Staff. Electrical, Mechanical, Civil, Chemical, Geodetic, Sanitary, and Agricultural Engineering Laws in the Philippines and Related Laws. 1999 9th ed. Published and distributed by Central Book Supply, 1999.