APA

Tullis G., Trappe T., . (2002). New insights into Business. Harlow: Longman.

Chicago

Tullis G, Trappe T, . 2002. New insights into Business. Harlow: Longman.

Harvard

Tullis G., Trappe T., . (2002). New insights into Business. Harlow: Longman.

MLA

Tullis G, Trappe T, . New insights into Business. Harlow: Longman. 2002.