Cita APA (7th ed.)

Christensen, V., & Pauly, D. (1993). Trophic models of aquatic ecosystems. International Center for Living Aquatic Resources Management.

Cita Chicago (17th ed.)

Christensen, Villy, i Daniel Pauly. Trophic Models of Aquatic Ecosystems. Manila: International Center for Living Aquatic Resources Management, 1993.

Cita MLA (9th ed.)

Christensen, Villy, i Daniel Pauly. Trophic Models of Aquatic Ecosystems. International Center for Living Aquatic Resources Management, 1993.