APA-viite (7. p.)

Spengler, E. H. 1., & Klein, J. 1. (1955). Introduction to business. McGraw-Hill.

Chicago-viite (17. p.)

Spengler, Edwin Harold 1906, ja Jacob 1896 Klein. Introduction to Business. New York: McGraw-Hill, 1955.

MLA-viite (9. p.)

Spengler, Edwin Harold 1906, ja Jacob 1896 Klein. Introduction to Business. McGraw-Hill, 1955.