Decker, C. L. (1998). Winning with the P & G. 99. Pocket Books.
Cita Chicago (17th ed.)Decker, Charles L. Winning with the P & G. 99. New York: Pocket Books, 1998.
Cita MLA (9th ed.)Decker, Charles L. Winning with the P & G. 99. Pocket Books, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.