APA

Barnes G. A., . (1991). The international student’s guide to the American University. Lincolnwood, Ill., USA: National Textbook Co.

Chicago

Barnes Gregory Allen, . 1991. The international student’s guide to the American University. Lincolnwood, Ill., USA: National Textbook Co.

Harvard

Barnes G. A., . (1991). The international student’s guide to the American University. Lincolnwood, Ill., USA: National Textbook Co.

MLA

Barnes Gregory Allen, . The international student’s guide to the American University. Lincolnwood, Ill., USA: National Textbook Co. 1991.