Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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