Walker, Orville C. Marketing strategy : a decision-focused approach / Orville C. Walker, Jr., John W. Mullins. - 8th ed. - New York, NY : McGraw-Hill Irwin, c2014. - xvi,368p.: ill; Includes index. ISBN: 9780078028946 0078028949 Subjects--Topical Terms: Marketing LC Class. No.: HF5415.13 / .W249 2014