Seidman, L. W. (1989). Productivity: The american advantage. New York: Simon and Schuster.
Chicago Style CitationSeidman, L. William. Productivity: The American Advantage. New York: Simon and Schuster, 1989.
Cita MLASeidman, L. William. Productivity: The American Advantage. New York: Simon and Schuster, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.