APA (7th ed.) Citation

Sadler, W. S., & Sadler, M. L. K. (1920). How to reduce and how to gain. A.C. McClurg & Co.

Chicago Style (17th ed.) Citation

Sadler, William Samuel, and Mrs. Lena Kellogg Sadler. How to Reduce and How to Gain. Chicago: A.C. McClurg & Co, 1920.

MLA (9th ed.) Citation

Sadler, William Samuel, and Mrs. Lena Kellogg Sadler. How to Reduce and How to Gain. A.C. McClurg & Co, 1920.