Citazione APA

Keith, L. A., & Gubell E Carlo. (1975). Introduction to Business Enterprises (4th ed.). McGraw-Hill.

Stile di citazione Chicago

Keith, Lyman A., e Gubell E Carlo. Introduction to Business Enterprises. 4th ed. NewYork: McGraw-Hill, 1975.

Citazione MLA

Keith, Lyman A., e Gubell E Carlo. Introduction to Business Enterprises. 4th ed. McGraw-Hill, 1975.