The gates ajar.

MLA

Phelps, Elizabeth Stuart. The gates ajar. Cambridge : Belknap Press of Harvard University Press, 1964.

APA

Phelps, E. (1964). The gates ajar. Cambridge : Belknap Press of Harvard University Press.

Chicago

Phelps, Elizabeth Stuart. The gates ajar. Cambridge : Belknap Press of Harvard University Press, 1964.