APA

Richardson L., . (1992). Selling by phone: how to reach and sell customers in the nineties. New York: McGraw-Hill.

Chicago

Richardson Linda, . 1992. Selling by phone: how to reach and sell customers in the nineties. New York: McGraw-Hill.

Harvard

Richardson L., . (1992). Selling by phone: how to reach and sell customers in the nineties. New York: McGraw-Hill.

MLA

Richardson Linda, . Selling by phone: how to reach and sell customers in the nineties. New York: McGraw-Hill. 1992.