Styl cytowania APA

Heiman, S. E. (2004). New conceptual selling (2 edition.).

Styl cytowania Chicago

Heiman, Stephen E. New Conceptual Selling. 2 edition. Kogan Page Inda Pvt Ltd: New Delhi, 2004.

Styl cytowania MLA

Heiman, Stephen E. New Conceptual Selling. 2 edition. 2004.