MLA

Cole, Laurence A. Human Chorionic Gonadotropin (hgc) (second Edition). Elsevier, 2015.

APA

Cole, L. A. (2015). Human Chorionic Gonadotropin (HGC) (Second Edition). Elsevier.

Chicago

Cole, Laurence A. Human Chorionic Gonadotropin (HGC) (second Edition). : Elsevier, 2015.