Hagar, H. A., & SoRelle, R. P. (1924). Applied business English. The Gregg Pub. Co.
Lua i Stíl Chicago (17ú heag.)Hagar, Hubert A., agus Rupert Pitt SoRelle. Applied Business English. New York, Chicago [etc.]: The Gregg Pub. Co, 1924.
Lua MLA (8ú heag.)Hagar, Hubert A., agus Rupert Pitt SoRelle. Applied Business English. The Gregg Pub. Co, 1924.
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