Robert, W. J., Corley, R. N., & Howard, C. G. (1967). Dillavou and Howard's principles of business law (8th ed.). Prentice-Hall.
Chicago-viite (17. p.)Robert, William J., Robert Neil Corley, ja Charles G. Howard. Dillavou and Howard's Principles of Business Law. 8th ed. Englewood Cliffs, NJ: Prentice-Hall, 1967.
MLA-viite (9. p.)Robert, William J., et al. Dillavou and Howard's Principles of Business Law. 8th ed. Prentice-Hall, 1967.
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