APA

Nierenberg G. I., Nierenberg G. I., . (1986). The complete negotiator. New York: Nierenberg & Zeif Publishers.

Chicago

Nierenberg Gerard I, Nierenberg Gerard I, . 1986. The complete negotiator. New York: Nierenberg & Zeif Publishers.

Harvard

Nierenberg G. I., Nierenberg G. I., . (1986). The complete negotiator. New York: Nierenberg & Zeif Publishers.

MLA

Nierenberg Gerard I, Nierenberg Gerard I, . The complete negotiator. New York: Nierenberg & Zeif Publishers. 1986.