Birch, C. E. (1928). Fundamentals of business practice: Laboratory material for use in junior business training courses. Gregg Publishing Co..
Čikaški stil citiranja (17. izdanje)Birch, Clarence E. Fundamentals of Business Practice: Laboratory Material for Use in Junior Business Training Courses. New York [etc.]: Gregg Publishing Co., 1928.
MLA način citiranja (8. izdanje)Birch, Clarence E. Fundamentals of Business Practice: Laboratory Material for Use in Junior Business Training Courses. Gregg Publishing Co., 1928.
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