Fleming, C. (2002). The ratio handbook (2nd ed.). Routledge.
Cita Chicago (17th ed.)Fleming, Carole. The Ratio Handbook. 2nd ed. New York: Routledge, 2002.
Cita MLA (9th ed.)Fleming, Carole. The Ratio Handbook. 2nd ed. Routledge, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.