Cita APA (7th ed.)

Private Development Corporation of the Philippines. (1973). The Portland cement industry. PDCP.

Cita Chicago (17th ed.)

Private Development Corporation of the Philippines. The Portland Cement Industry. [Makati, Rizal]: PDCP, 1973.

Cita MLA (9th ed.)

Private Development Corporation of the Philippines. The Portland Cement Industry. PDCP, 1973.