Cita APA (7th ed.)

Crow, R., & Keeley, D. (1992). A practical guide to tropical aquarium fish. Courage Books.

Cita Chicago (17th ed.)

Crow, Richard, i Dave Keeley. A Practical Guide to Tropical Aquarium Fish. Philadelphia: Courage Books, 1992.

Cita MLA (9th ed.)

Crow, Richard, i Dave Keeley. A Practical Guide to Tropical Aquarium Fish. Courage Books, 1992.