Cita APA (7a ed.)

Perni, E. M. (1982). Food, fuel, and urbanization: A survey of issues. s.n.

Cita Chicago Style (17a ed.)

Perni, Ernesto M. Food, Fuel, and Urbanization: A Survey of Issues. [s.l: s.n, 1982.

Cita MLA (9a ed.)

Perni, Ernesto M. Food, Fuel, and Urbanization: A Survey of Issues. s.n, 1982.