Cohen, W. A. (1981). How to sell to the government: A step-by-step guide to success. John Wiley and Sons.
Citazione stile Chigago Style (17a edizione)Cohen, William A. How to Sell to the Government: A Step-by-step Guide to Success. John Wiley and Sons, 1981.
Citatione MLA (9a ed.)Cohen, William A. How to Sell to the Government: A Step-by-step Guide to Success. John Wiley and Sons, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.