APA

Stone B., Wyman J., . (1986). Successful telemarketing: opportunities and techniques for increasing sales and profits. Lincolnwood, Ill., U.S.A: NTC Business Books.

Chicago

Stone Bob, Wyman John, . 1986. Successful telemarketing: opportunities and techniques for increasing sales and profits. Lincolnwood, Ill., U.S.A: NTC Business Books.

Harvard

Stone B., Wyman J., . (1986). Successful telemarketing: opportunities and techniques for increasing sales and profits. Lincolnwood, Ill., U.S.A: NTC Business Books.

MLA

Stone Bob, Wyman John, . Successful telemarketing: opportunities and techniques for increasing sales and profits. Lincolnwood, Ill., U.S.A: NTC Business Books. 1986.