एपीए उद्धरण

Penfield, P. (2010). A Primer on Negotiating Corporate Purchase Contracts. Business Expert Press.

शिकागो स्टाइल उद्धरण

Penfield, Patrick. A Primer On Negotiating Corporate Purchase Contracts. Business Expert Press, 2010.

एमएलए उद्धरण

Penfield, Patrick. A Primer On Negotiating Corporate Purchase Contracts. Business Expert Press, 2010.