APA (7e ed.) Bronvermelding

Vieira, W. (1997). The new sales manager: Challenges for twenty first century. Resoponse.

Chicago (17e ed.) Bronvermelding

Vieira, Walter. The New Sales Manager: Challenges for Twenty First Century. New Delhi: Resoponse, 1997.

MLA (9e ed.) Bronvermelding

Vieira, Walter. The New Sales Manager: Challenges for Twenty First Century. Resoponse, 1997.