APA ציטוט

W.Johnston Mark, & W.Marshall Greg. (2008). Relationship Selling. American: Mc Graw Hill.

Trích dẫn kiểu Chicago

W.Johnston Mark, và W.Marshall Greg. Relationship Selling. American: Mc Graw Hill, 2008.

ציטוט MLA

W.Johnston Mark, và W.Marshall Greg. Relationship Selling. American: Mc Graw Hill, 2008.