Cohen, W. A. (1981). How to sell to the government: A step-by-step guide to success. John Wiley and Sons.
Cita Chicago (17th ed.)Cohen, William A. How to Sell to the Government: A Step-by-step Guide to Success. John Wiley and Sons, 1981.
Cita MLA (9th ed.)Cohen, William A. How to Sell to the Government: A Step-by-step Guide to Success. John Wiley and Sons, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.