Johnson, D. W., & Johnson, R. T. (1991). Learning together and alone: Cooperative, competitive, and individualistic learning (Third edition.). Allyn and Bacon ; Prentice-hall, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnson, David W., और Roger T. Johnson. Learning Together and Alone: Cooperative, Competitive, and Individualistic Learning. Third edition. Boston: Allyn and Bacon ; Prentice-hall, Inc., 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohnson, David W., और Roger T. Johnson. Learning Together and Alone: Cooperative, Competitive, and Individualistic Learning. Third edition. Allyn and Bacon ; Prentice-hall, Inc., 1991.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.