APA (7th ed.) Citation

Spiegel, R. (1981). Sleep and sleeplessness in advanced age / René Spiegel. MTP Press.

Chicago Style (17th ed.) Citation

Spiegel, René. Sleep and Sleeplessness in Advanced Age / René Spiegel. Lancaster: MTP Press, 1981.

MLA (9th ed.) Citation

Spiegel, René. Sleep and Sleeplessness in Advanced Age / René Spiegel. MTP Press, 1981.

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