Cita APA (7a ed.)

Gresswell, P. (1971). Environment: An alphabetical handbook. John Murray.

Cita Chicago Style (17a ed.)

Gresswell, Peter. Environment: An Alphabetical Handbook. Londres: John Murray, 1971.

Cita MLA (9a ed.)

Gresswell, Peter. Environment: An Alphabetical Handbook. John Murray, 1971.