University, U. c. S. L. (1970). Textbooks for sale at the Parks College bookstore, February 5, 1970.
Chicago-referens (17:e uppl.)University, Unknown creator; St. Louis. Textbooks for Sale at the Parks College Bookstore, February 5, 1970. 1970.
MLA-referens (8:e uppl.)University, Unknown creator; St. Louis. Textbooks for Sale at the Parks College Bookstore, February 5, 1970. 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.