Παραπομπή APA

Welcomme, R. L. (1993). International introductions of inland aquatic species.

Παραπομπή Chicago Style

Welcomme, R L. International Introductions of Inland Aquatic Species. Food & Agriculture Organisation of the United Nations, London, 1993.

Παραπομπή MLA

Welcomme, R L. International Introductions of Inland Aquatic Species. 1993.