APA (7e ed.) Bronvermelding

Caliwara, C. A. (1963). The exploitation of precast and prestressed concrete in the Philippines. s.n.

Chicago (17e ed.) Bronvermelding

Caliwara, Cesar A. The Exploitation of Precast and Prestressed Concrete in the Philippines. [S.l: s.n, 1963.

MLA (9e ed.) Bronvermelding

Caliwara, Cesar A. The Exploitation of Precast and Prestressed Concrete in the Philippines. s.n, 1963.