APA

Bennett F. D., Zwolfer H., .Exploration for natural enemies of the water hyacinth in Northern south America and Trinidad. : .

Chicago

Bennett F D, Zwolfer H, .Exploration for natural enemies of the water hyacinth in Northern south America and Trinidad. : .

Harvard

Bennett F. D., Zwolfer H., .Exploration for natural enemies of the water hyacinth in Northern south America and Trinidad. : .

MLA

Bennett F D, Zwolfer H, .: . .