APA (7th ed.) Citation

Selirio, . B. (1977). Ports and harbors in the philippines today. Department of Public Works, Transportation and Communications.

Chicago Style (17th ed.) Citation

Selirio, Benedicto. Ports and Harbors in the Philippines Today. [Manila]: Department of Public Works, Transportation and Communications, 1977.

MLA (9th ed.) Citation

Selirio, Benedicto. Ports and Harbors in the Philippines Today. Department of Public Works, Transportation and Communications, 1977.