Cita APA (7th ed.)

Castro, A., & Cezar, A. (1988). Engineering: Law, contracts, specifications, professional ethics, labor law. Published & distributed by Beta Publications.

Cita Chicago (17th ed.)

Castro, Anselmo, i Augustus Cezar. Engineering: Law, Contracts, Specifications, Professional Ethics, Labor Law. Metro Manila: Published & distributed by Beta Publications, 1988.

Cita MLA (9th ed.)

Castro, Anselmo, i Augustus Cezar. Engineering: Law, Contracts, Specifications, Professional Ethics, Labor Law. Published & distributed by Beta Publications, 1988.