Booher, Dianna Daniels. Winning sales letters / Dianna Booher. - New Delhi : Prentice-Hall of India, 2007. - xvi, 333 p. ; 24 cm. ISBN: 9788120332102 LCCN: 89039886 Subjects--Topical Terms: Sales letters.Sales promotion. LC Class. No.: HF5730 / .B66 2007