एपीए उद्धरण

Hippel, E. v. (1988). The sources of innovation. New York: Oxford University Press.

शिकागो स्टाइल उद्धरण

Hippel, Eric von. The Sources of Innovation. New York: Oxford University Press, 1988.

एमएलए उद्धरण

Hippel, Eric von. The Sources of Innovation. New York: Oxford University Press, 1988.