SoRelle, R. P., & Smith, H. H. (1936). Advanced typewriting exercises. Gregg Publishing Co..
Čikaški stil citiranja (17. izdanje)SoRelle, Rupert Pitt, i Harold Harland Smith. Advanced Typewriting Exercises. New York : Chicago [etc.]: Gregg Publishing Co., 1936.
MLA način citiranja (8. izdanje)SoRelle, Rupert Pitt, i Harold Harland Smith. Advanced Typewriting Exercises. Gregg Publishing Co., 1936.
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