APA-referens

Ewald William,R., E. (1968). Environment And Policy: The Next Fifty Years. Indiana University Press.

Chicago-stil citat

Ewald William,R., Ed. Environment And Policy: The Next Fifty Years. London: Indiana University Press, 1968.

MLA-referens

Ewald William,R., Ed. Environment And Policy: The Next Fifty Years. Indiana University Press, 1968.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.