APA

Campbell H. W., Irvine A. B., .Feeding ecology of the west Indian manatee Trichechus manatus Linnaeus. : .

Chicago

Campbell Howard W, Irvine A Blair, .Feeding ecology of the west Indian manatee Trichechus manatus Linnaeus. : .

Harvard

Campbell H. W., Irvine A. B., .Feeding ecology of the west Indian manatee Trichechus manatus Linnaeus. : .

MLA

Campbell Howard W, Irvine A Blair, .: . .