APA (7th ed.) Citation

Rogers, L. (1986). Selling by telephone: Tested techniques to make every call count. Kogan Page.

Chicago Style (17th ed.) Citation

Rogers, Len. Selling by Telephone: Tested Techniques to Make Every Call Count. London [u.a.]: Kogan Page, 1986.

MLA (9th ed.) Citation

Rogers, Len. Selling by Telephone: Tested Techniques to Make Every Call Count. Kogan Page, 1986.