Brewer, J. M., Hurlbut, F., & Caseman, J. (1940). Workbook: Introductory business training (Complete edition.). Ginn and Company.
Chicago-viite (17. p.)Brewer, John M., Floyd Hurlbut, ja Juvenilia Caseman. Workbook: Introductory Business Training. Complete edition. Boston : New York [etc.]: Ginn and Company, 1940.
MLA-viite (8. p.)Brewer, John M., et al. Workbook: Introductory Business Training. Complete edition. Ginn and Company, 1940.
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