APA (7th ed.) Citation

Leavitt, R. K. (1950). Prologue to tomorrow: A history of the first hundred years in the life of the Pennsylvania Salt Manufacturing Company. Pennsylvania Salt Manufacturing Co..

Chicago Style (17th ed.) Citation

Leavitt, Robert Keith. Prologue to Tomorrow: A History of the First Hundred Years in the Life of the Pennsylvania Salt Manufacturing Company. Philadelphia: Pennsylvania Salt Manufacturing Co., 1950.

MLA (9th ed.) Citation

Leavitt, Robert Keith. Prologue to Tomorrow: A History of the First Hundred Years in the Life of the Pennsylvania Salt Manufacturing Company. Pennsylvania Salt Manufacturing Co., 1950.