APA (7th ed.) Citation

Schulz, B. (1979). Sanatorium under the sign of the hourglass. Penguin Books.

Chicago Style (17th ed.) Citation

Schulz, Bruno. Sanatorium Under the Sign of the Hourglass. New York: Penguin Books, 1979.

MLA (8th ed.) Citation

Schulz, Bruno. Sanatorium Under the Sign of the Hourglass. Penguin Books, 1979.