Keeling, B. L., Kallaus, N. F., Burnham, K., & Ruprecht, M. M. (1996). Administrative office management (11th ed.). South-Western Educational Pub..
Cita Chicago (17th ed.)Keeling, B. Lewis, Norman Francis Kallaus, Kent Burnham, i Mary M. Ruprecht. Administrative Office Management. 11th ed. [Cincinnati, Ohio]: South-Western Educational Pub., 1996.
Cita MLA (8th ed.)Keeling, B. Lewis, et al. Administrative Office Management. 11th ed. South-Western Educational Pub., 1996.
Atenció: Aquestes cites poden no estar 100% correctes.