APA استشهاد

Gullard, J. A. (1969). Manual of methods for fish stock assesment. F A O United Nations.

استشهاد بنمط شيكاغو

Gullard, J. A. Manual of Methods for Fish Stock Assesment. Rome: F A O United Nations, 1969.

MLA استشهاد

Gullard, J. A. Manual of Methods for Fish Stock Assesment. F A O United Nations, 1969.