APA

Richardson L., . (1994). Stop telling, start selling. New York: McGraw-Hill.

Chicago

Richardson Linda, . 1994. Stop telling, start selling. New York: McGraw-Hill.

Harvard

Richardson L., . (1994). Stop telling, start selling. New York: McGraw-Hill.

MLA

Richardson Linda, . Stop telling, start selling. New York: McGraw-Hill. 1994.