David, F. R. (1991). Strategic management (3rd ed.). Merrill.
Lua i Stíl Chicago (17ú heag.)David, Fred R. Strategic Management. 3rd ed. New York: Merrill, 1991.
Lua MLA (9ú heag.)David, Fred R. Strategic Management. 3rd ed. Merrill, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.