APA

Walker O. C. W. W. L., .Marketing Strategy:A Decision - Focused Approach. NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2006: .

Chicago

Walker Orville C/John W.Mullins/Harper W.Boyd/Jean-Claude Larreche, .Marketing Strategy:A Decision - Focused Approach. NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2006: .

Harvard

Walker O. C. W. W. L., .Marketing Strategy:A Decision - Focused Approach. NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2006: .

MLA

Walker Orville C/John W.Mullins/Harper W.Boyd/Jean-Claude Larreche, .NEW DELHI: Tata McGraw-Hill Publishing Company Limited,2006: . .