Παραπομπή APA

Johnson, R. A. (1993). Negotiation basics: Concepts, skills and excercises. Sage publications.

Παραπομπή Chicago Style

Johnson, Ralph A. Negotiation Basics: Concepts, Skills and Excercises. Newbury park: Sage publications, 1993.

Παραπομπή MLA

Johnson, Ralph A. Negotiation Basics: Concepts, Skills and Excercises. Sage publications, 1993.