Needles, B. E., Powers,Marian, & Crosson,Susan V. (2005). Principles of accounting (9th ed.). Houghton Mifflin Co..
Lua i Stíl Chicago (17ú heag.)Needles, Belverd E., Powers,Marian, agus Crosson,Susan V. Principles of Accounting. 9th ed. Boston: Houghton Mifflin Co., 2005.
Lua MLA (8ú heag.)Needles, Belverd E., et al. Principles of Accounting. 9th ed. Houghton Mifflin Co., 2005.
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