Cita APA (7th ed.)

Davidson, D. A. (1992). The evaluation of land resources (2nd ed.). Longman Scientific & Technical.

Cita Chicago (17th ed.)

Davidson, Donald A. The Evaluation of Land Resources. 2nd ed. Harlow, Essex, Eng: Longman Scientific & Technical, 1992.

Cita MLA (9th ed.)

Davidson, Donald A. The Evaluation of Land Resources. 2nd ed. Longman Scientific & Technical, 1992.