APA (7th ed.) Citation

Levenstein, S. Peptic Ulcer at the End of the 20th Century: Biological and Psychological Risk Factors. Wiley.

Chicago Style (17th ed.) Citation

Levenstein, Susan. Peptic Ulcer at the End of the 20th Century: Biological and Psychological Risk Factors. Wiley.

MLA (9th ed.) Citation

Levenstein, Susan. Peptic Ulcer at the End of the 20th Century: Biological and Psychological Risk Factors. Wiley.

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