APA (7th ed.) Citation

Parkes, J. D. (1985). Sleep and its disorders / J.D. Parkes. Saunders.

Chicago Style (17th ed.) Citation

Parkes, J. D. Sleep and Its Disorders / J.D. Parkes. London: Saunders, 1985.

MLA (9th ed.) Citation

Parkes, J. D. Sleep and Its Disorders / J.D. Parkes. Saunders, 1985.

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