APA (7th ed.) Citation

Mack, P. G. B., & Smith, J. M. (1939). Methods of conducting mass studies in human nutrition. [publisher not identified].

Chicago Style (17th ed.) Citation

Mack, Pauline Gracie Beery, and Janice Minverva Smith. Methods of Conducting Mass Studies in Human Nutrition. State College, Pa.: [publisher not identified], 1939.

MLA (9th ed.) Citation

Mack, Pauline Gracie Beery, and Janice Minverva Smith. Methods of Conducting Mass Studies in Human Nutrition. [publisher not identified], 1939.