APA (7 वां संस्करण) प्रशस्ति पत्र

WALKER ORVILLE C. (1999). MARKETING STRATEGY: PLANNING AND IMPLEMENTATION (3RD.). TATA MCGRAW-HILL PUBLISHING COMPANY.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

WALKER ORVILLE C. MARKETING STRATEGY: PLANNING AND IMPLEMENTATION. 3RD. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY, 1999.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

WALKER ORVILLE C. MARKETING STRATEGY: PLANNING AND IMPLEMENTATION. 3RD. TATA MCGRAW-HILL PUBLISHING COMPANY, 1999.