APA (7e ed.) Bronvermelding

Philippines, Central Book Supply, Inc, & Philippines (Republic). (1999). Electrical, mechanical, civil, chemical, geodetic, sanitary and agricultural engineering laws in the Philippines and related laws (1999 9th ed.). Central Book Supply.

Chicago (17e ed.) Bronvermelding

Philippines, Inc Central Book Supply, en Philippines (Republic). Electrical, Mechanical, Civil, Chemical, Geodetic, Sanitary and Agricultural Engineering Laws in the Philippines and Related Laws. 1999 9th ed. Manila: Central Book Supply, 1999.

MLA (9e ed.) Bronvermelding

Philippines, et al. Electrical, Mechanical, Civil, Chemical, Geodetic, Sanitary and Agricultural Engineering Laws in the Philippines and Related Laws. 1999 9th ed. Central Book Supply, 1999.