एपीए उद्धरण

Perkins, F. T. (1977). Licensing of Biological Products: A Survey of Practices.

शिकागो स्टाइल उद्धरण

Perkins, F. T. Licensing of Biological Products: A Survey of Practices. 1977.

एमएलए उद्धरण

Perkins, F. T. Licensing of Biological Products: A Survey of Practices. 1977.