Corley, R. N., Black Robert.L., j. a., & Reed, O. L. (1981). The Legal Environment of Business (5th.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Corley, Robert N., joint author Black Robert.L., agus Omer Lee Reed. The Legal Environment of Business. 5th. New York: McGraw-Hill, 1981.
Lua MLA (9ú heag.)Corley, Robert N., et al. The Legal Environment of Business. 5th. McGraw-Hill, 1981.
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