APA ציטוט

Morgan, R. P. C. (1988). Soil erossion and conservation. Longman Group Ltd.

Chicago Edition Citation

Morgan, R P C. Soil Erossion and Conservation. London: Longman Group Ltd, 1988.

ציטוט MLA

Morgan, R P C. Soil Erossion and Conservation. Longman Group Ltd, 1988.