APA استشهاد

Harbury, C. (1971). Introduction to economic behaviour. Collins Sons & Co. Ltd.

استشهاد بنمط شيكاغو

Harbury, C.D. Introduction to Economic Behaviour. London: Collins Sons & Co. Ltd, 1971.

MLA استشهاد

Harbury, C.D. Introduction to Economic Behaviour. Collins Sons & Co. Ltd, 1971.