APA (7th ed.) Citation

Parkes, J. D. (1986). Sleep and its disorders (1. publ., repr.). Saunders.

Chicago Style (17th ed.) Citation

Parkes, J. D. Sleep and Its Disorders. 1. publ., repr. London u.a: Saunders, 1986.

MLA (9th ed.) Citation

Parkes, J. D. Sleep and Its Disorders. 1. publ., repr. Saunders, 1986.

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