Cita APA (7a ed.)

Tamm, C. O. (1990). Nitrogen in terrestrial ecosystems: Questions of productivity, vegetational changes, and ecosystem stability. Springer-Verlag.

Cita Chicago Style (17a ed.)

Tamm, Carl Olof. Nitrogen in Terrestrial Ecosystems: Questions of Productivity, Vegetational Changes, and Ecosystem Stability. Berlin: Springer-Verlag, 1990.

Cita MLA (8a ed.)

Tamm, Carl Olof. Nitrogen in Terrestrial Ecosystems: Questions of Productivity, Vegetational Changes, and Ecosystem Stability. Springer-Verlag, 1990.