APA-referens (7:e uppl.)

Hill, . T. . . P. (1979). Profits and rates of return. OECD.

Chicago-referens (17:e uppl.)

Hill, T P. Profits and Rates of Return. Paris: OECD, 1979.

MLA-referens (8:e uppl.)

Hill, T P. Profits and Rates of Return. OECD, 1979.