Sleep and wakefulness : as alternating phases in the cycle of existence

MLA

Kleitman, Nathaniel. Sleep and Wakefulness : As Alternating Phases In the Cycle of Existence. Chicago,: University of Chicago Press, 1939.

APA

Kleitman, N. (1939). Sleep and wakefulness : as alternating phases in the cycle of existence. Chicago,: University of Chicago Press.

Chicago

Kleitman, Nathaniel, Sleep and Wakefulness: As Alternating Phases In the Cycle of Existence. Chicago,: University of Chicago Press, 1939.