APA (7th ed.) Citation

Johns, E., & Pfefferkorn, B. (1934). An activity analysis of nursing. [publisher not identified].

Chicago Style (17th ed.) Citation

Johns, Ethel, and Blanche Pfefferkorn. An Activity Analysis of Nursing. New York City: [publisher not identified], 1934.

MLA (8th ed.) Citation

Johns, Ethel, and Blanche Pfefferkorn. An Activity Analysis of Nursing. [publisher not identified], 1934.