Cita APA (7a ed.)

GONZALES, G. A., & AGUILAR, R. O. (2001). Aquatic Ecosystems (2nd. printing. Revis. ed.). University of the Philippines. Open University.

Cita Chicago Style (17a ed.)

GONZALES, Gaudiosa A., y Riza O. AGUILAR. Aquatic Ecosystems. 2nd. printing. Revis. ed. Quezon City: University of the Philippines. Open University, 2001.

Cita MLA (9a ed.)

GONZALES, Gaudiosa A., y Riza O. AGUILAR. Aquatic Ecosystems. 2nd. printing. Revis. ed. University of the Philippines. Open University, 2001.