Calkins, R. M. (1981). Antitrust Guidelines for the Business Executive. Dow Jones- Irwin.
Cita Chicago (17th ed.)Calkins, Richard M. Antitrust Guidelines for the Business Executive. Homewood Ill: Dow Jones- Irwin, 1981.
Cita MLA (9th ed.)Calkins, Richard M. Antitrust Guidelines for the Business Executive. Dow Jones- Irwin, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.