Cita APA (7th ed.)

Fenchel, T. (1987). Ecology-potentials and limitations. Ecology Institute.

Cita Chicago (17th ed.)

Fenchel, Tom. Ecology-potentials and Limitations. Berlín: Ecology Institute, 1987.

Cita MLA (9th ed.)

Fenchel, Tom. Ecology-potentials and Limitations. Ecology Institute, 1987.