एपीए उद्धरण

Tisdell, C. A. (1991). Economics of environmental conservations. Allied Publications.

शिकागो स्टाइल उद्धरण

Tisdell, C. A. Economics of Environmental Conservations. Allied Publications, 1991.

एमएलए उद्धरण

Tisdell, C. A. Economics of Environmental Conservations. Allied Publications, 1991.