Citazione APA

Whiting, P. H. (1964). Five great problems of salesmen and how to solve them. McGraw Hill.

Stile di citazione Chicago

Whiting, Percy H. Five Great Problems of Salesmen and How to Solve Them. New York: McGraw Hill, 1964.

Citazione MLA

Whiting, Percy H. Five Great Problems of Salesmen and How to Solve Them. McGraw Hill, 1964.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.