APA (7th ed.) Citation

Howard, C., & Christian, H. (1936). The Diagnosis and Treatment of Pneumonia.

Chicago Style (17th ed.) Citation

Howard, C., and H. Christian. The Diagnosis and Treatment of Pneumonia. New-York, 1936.

MLA (8th ed.) Citation

Howard, C., and H. Christian. The Diagnosis and Treatment of Pneumonia. 1936.

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