Cita APA

Ewald, W. R. (1968). Environment and change: The next fifty years. Bloomington: Indiana University.

Citación estilo Chicago

Ewald, William R. Environment and Change: The Next Fifty Years. Bloomington: Indiana University, 1968.

Cita MLA

Ewald, William R. Environment and Change: The Next Fifty Years. Bloomington: Indiana University, 1968.

Precaución: Estas citas no son 100% exactas.