एपीए उद्धरण

Vieira, W. (2007). The New sales manager: Challenges for the 21st century.

शिकागो स्टाइल उद्धरण

Vieira, Walter. The New Sales Manager: Challenges for the 21st Century. Response Books, 2007.

एमएलए उद्धरण

Vieira, Walter. The New Sales Manager: Challenges for the 21st Century. 2007.