Brewer, J. M., Hurlbut, F., & Caseman, J. (1935). Key and Manual: To accompany Elements of business training new edition and workbook. Ginn and Company.
Chicago-viite (17. p.)Brewer, John M., Floyd Hurlbut, ja Juvenilia Caseman. Key and Manual: To Accompany Elements of Business Training New Edition and Workbook. [Boston]: Ginn and Company, 1935.
MLA-viite (8. p.)Brewer, John M., et al. Key and Manual: To Accompany Elements of Business Training New Edition and Workbook. Ginn and Company, 1935.
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