APA (7th ed.) Citation

Dignen, B. (1999). English for negotiating. York Associates [u.a.].

Chicago Style (17th ed.) Citation

Dignen, Bob. English for Negotiating. York [u.a.]: York Associates [u.a.], 1999.

MLA (9th ed.) Citation

Dignen, Bob. English for Negotiating. York Associates [u.a.], 1999.