Pitts, R. A., & Lei, D. (2006). Strategic management: Building and sustaining competitive advantage (4th ed.). Thomson/South-Western.
Lua i Stíl Chicago (17ú heag.)Pitts, Robert A., agus David Lei. Strategic Management: Building and Sustaining Competitive Advantage. 4th ed. Mason, OH: Thomson/South-Western, 2006.
Lua MLA (9ú heag.)Pitts, Robert A., agus David Lei. Strategic Management: Building and Sustaining Competitive Advantage. 4th ed. Thomson/South-Western, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.