WALKER, o. C. (1992). Marketing Strategy Planning And Implementation / Orville C. Walker. Richard D. Irwin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWALKER, orville C. Marketing Strategy Planning And Implementation / Orville C. Walker. Richard D. Irwin, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWALKER, orville C. Marketing Strategy Planning And Implementation / Orville C. Walker. Richard D. Irwin, 1992.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.