APA (7th ed.) Citation

Hartmann, E. (1973). The functions of sleep / (by) Ernest L. Hartmann. Yale University Press.

Chicago Style (17th ed.) Citation

Hartmann, Ernest. The Functions of Sleep / (by) Ernest L. Hartmann. New Haven ; London: Yale University Press, 1973.

MLA (9th ed.) Citation

Hartmann, Ernest. The Functions of Sleep / (by) Ernest L. Hartmann. Yale University Press, 1973.

Warning: These citations may not always be 100% accurate.