APA ציטוט

Guttman, B. S. (1999). Biology. WCB/McGraw-Hill.

Trích dẫn kiểu Chicago

Guttman, Burton S. Biology. WCB/McGraw-Hill, 1999.

ציטוט MLA

Guttman, Burton S. Biology. WCB/McGraw-Hill, 1999.