APA

Tullis G., Power S., . (2004). New Insights into Business. Harlow: Longman.

Chicago

Tullis G, Power S, . 2004. New Insights into Business. Harlow: Longman.

Harvard

Tullis G., Power S., . (2004). New Insights into Business. Harlow: Longman.

MLA

Tullis G, Power S, . New Insights into Business. Harlow: Longman. 2004.