एपीए उद्धरण

Gutterman, A. S. (2018). Sustainable entrepreneurship. New York, NY: Business Expert Press.

शिकागो स्टाइल उद्धरण

Gutterman, Alan S. Sustainable Entrepreneurship. New York, NY: Business Expert Press, 2018.

एमएलए उद्धरण

Gutterman, Alan S. Sustainable Entrepreneurship. New York, NY: Business Expert Press, 2018.