Guttman, B. S. (1999). Student study guide to accompany Biology. WCB/McGraw-Hill.
Trích dẫn kiểu ChicagoGuttman, Burton S. Student Study Guide to Accompany Biology. WCB/McGraw-Hill, 1999.
MLA citiranjeGuttman, Burton S. Student Study Guide to Accompany Biology. WCB/McGraw-Hill, 1999.
Opozorilo: Ti citati niso vedno 100% točni.