APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.