APA ציטוט

Private Development Corporation of the Philippines. (1973). The portland cement industry. s.n.].

Chicago Style (17th ed.) Citation

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

ציטוט MLA

Private Development Corporation of the Philippines. The Portland Cement Industry. s.n.], 1973.