Cita APA (7th ed.)

Perlick, W. W., & Hermanson, R. H. (1981). Introduction to business (3rd ed.). Learning Systems Company, R. D. Irwin.

Cita Chicago (17th ed.)

Perlick, Walter W., i Roger H. Hermanson. Introduction to Business. 3rd ed. Homewood, Illinois: Learning Systems Company, R. D. Irwin, 1981.

Cita MLA (9th ed.)

Perlick, Walter W., i Roger H. Hermanson. Introduction to Business. 3rd ed. Learning Systems Company, R. D. Irwin, 1981.