Dyfyniad APA

Barney, J. B. (2011). Gaining and sustaining competitive advantage (4th ed.). Pearson.

Dyfyniad Arddull Chicago

Barney, Jay B. Gaining and Sustaining Competitive Advantage. 4th ed. Upper Saddle River, NJ: Pearson, 2011.

Dyfyniad MLA

Barney, Jay B. Gaining and Sustaining Competitive Advantage. 4th ed. Pearson, 2011.

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