एपीए उद्धरण

Summary of the enviornmental report,1987. The council of enviornmental advisors,1987.

शिकागो स्टाइल उद्धरण

Summary of the Enviornmental Report,1987. Wisbaden: The council of enviornmental advisors,1987.

एमएलए उद्धरण

Summary of the Enviornmental Report,1987. The council of enviornmental advisors,1987.