Whiting, P. H. (1964). Five great problems of salesmen and how to solve them. McGraw Hill.
Chicago Edition CitationWhiting, Percy H. Five Great Problems of Salesmen and How to Solve Them. New York: McGraw Hill, 1964.
MLA Edition CitationWhiting, Percy H. Five Great Problems of Salesmen and How to Solve Them. McGraw Hill, 1964.
Warning: These citations may not always be 100% accurate.