Dyfyniad APA

Barney, J. B. (2002). Gaining and sustaining competitive advantage (2nd ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Barney, Jay B. Gaining and Sustaining Competitive Advantage. 2nd ed. Upper Saddle River, NJ: Prentice Hall, 2002.

Dyfyniad MLA

Barney, Jay B. Gaining and Sustaining Competitive Advantage. 2nd ed. Prentice Hall, 2002.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.