APA

Keith L. A., Gubellini C. E. & McGraw-Hill (1968-1995). (1975). Study guide to accompany introduction to business enterprise. New York [i pozostałe]: McGraw-Hill Book Company.

Chicago

Keith Lyman A, Gubellini Carlo E and McGraw-Hill (1968-1995). 1975. Study guide to accompany introduction to business enterprise. New York [i pozostałe]: McGraw-Hill Book Company.

Harvard

Keith L. A., Gubellini C. E. and McGraw-Hill (1968-1995). (1975). Study guide to accompany introduction to business enterprise. New York [i pozostałe]: McGraw-Hill Book Company.

MLA

Keith Lyman A, Gubellini Carlo E and McGraw-Hill (1968-1995). Study guide to accompany introduction to business enterprise. New York [i pozostałe]: McGraw-Hill Book Company. 1975.