Cita APA (7a ed.)

Graham, O. L. (2015). Presidents and the American Environment. University Press of Kansas.

Cita Chicago Style (17a ed.)

Graham, Otis L. Presidents and the American Environment. Lawrence, Kansas: University Press of Kansas, 2015.

Cita MLA (8a ed.)

Graham, Otis L. Presidents and the American Environment. University Press of Kansas, 2015.