Gaya APA

Yager, D, R., Yager, D. (1993). The Business Handbook (A Guide To Building Your Own Successful Amway Business) . Amerika: InterNet Services Corp.

Gaya MLA

Yager, Dexter, R.., Yager, Doyle. "The Business Handbook (A Guide To Building Your Own Successful Amway Business)". Amerika: InterNet Services Corp, 1993. Text.