Cita APA (7a ed.)

Usher, M. (1973). Biological management and conservation: Ecological theory, application and planning. Chapman and Hall.

Cita Chicago Style (17a ed.)

Usher, M.B. Biological Management and Conservation: Ecological Theory, Application and Planning. London: Chapman and Hall, 1973.

Cita MLA (9a ed.)

Usher, M.B. Biological Management and Conservation: Ecological Theory, Application and Planning. Chapman and Hall, 1973.