APA

Culligan M. J., . (1981). Getting back to the basics of selling. New York: Crown Publishers.

Chicago

Culligan Matthew J, . 1981. Getting back to the basics of selling. New York: Crown Publishers.

Harvard

Culligan M. J., . (1981). Getting back to the basics of selling. New York: Crown Publishers.

MLA

Culligan Matthew J, . Getting back to the basics of selling. New York: Crown Publishers. 1981.