Sommerfeld, R. M. (1974). Federal taxes and management decisions. Irwin.
Cita Chicago (17th ed.)Sommerfeld, Raynard M. Federal Taxes and Management Decisions. Homewood, Ill: Irwin, 1974.
Cita MLA (9th ed.)Sommerfeld, Raynard M. Federal Taxes and Management Decisions. Irwin, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.