Cita APA (7a ed.)

Walker, L. R. (1999). Ecosystems of disturbed ground. Elsevier.

Cita Chicago Style (17a ed.)

Walker, Lawrence R. Ecosystems of Disturbed Ground. Amsterdam [etc.]: Elsevier, 1999.

Cita MLA (9a ed.)

Walker, Lawrence R. Ecosystems of Disturbed Ground. Elsevier, 1999.