APA

Comfort J., . (1998). Effective Negotiating. New York: Oxford University Press.

Chicago

Comfort J, . 1998. Effective Negotiating. New York: Oxford University Press.

Harvard

Comfort J., . (1998). Effective Negotiating. New York: Oxford University Press.

MLA

Comfort J, . Effective Negotiating. New York: Oxford University Press. 1998.