APA Edition Citation

Leffingwell, W. H., & Robinson, E. M. (1950). Text book of office management (3rd ed.). Mc Graw Hill Book Company.

Chicago Edition Citation

Leffingwell, William H., and Edwin M. Robinson. Text Book of Office Management. 3rd ed. New York: Mc Graw Hill Book Company, 1950.

MLA Edition Citation

Leffingwell, William H., and Edwin M. Robinson. Text Book of Office Management. 3rd ed. Mc Graw Hill Book Company, 1950.