Cita APA (7a ed.)

Ewald, W. R. (1971). Environment for man: The next fifty years. Indiana University.

Cita Chicago Style (17a ed.)

Ewald, William R. Environment for Man: The Next Fifty Years. London: Indiana University, 1971.

Cita MLA (9a ed.)

Ewald, William R. Environment for Man: The Next Fifty Years. Indiana University, 1971.