Lesikar, R. V., Pettit, J. D., & Flatley, M. E. (1999). Lesikar's basic business communication (8th ed., International ed.). Irwin/McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Lesikar, Raymond Vincent, John D. Pettit, agus Marie Elizabeth Flatley. Lesikar's Basic Business Communication. 8th ed., International ed. Boston: Irwin/McGraw-Hill, 1999.
Lua MLA (8ú heag.)Lesikar, Raymond Vincent, et al. Lesikar's Basic Business Communication. 8th ed., International ed. Irwin/McGraw-Hill, 1999.
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