Day, R. L. (1968). Sales management simulation: Participant's manual. Sales and Marketing Executices-International.
Citazione stile Chigago Style (17a edizione)Day, Ralph L. Sales Management Simulation: Participant's Manual. New York: Sales and Marketing Executices-International, 1968.
Citatione MLA (9a ed.)Day, Ralph L. Sales Management Simulation: Participant's Manual. Sales and Marketing Executices-International, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.