Gay, L. R., & Diehl, P. L. (1996). Research methods for business and management. Prentice-Hall International.
Lua i Stíl Chicago (17ú heag.)Gay, L. R., agus P. L. Diehl. Research Methods for Business and Management. Singapore: Prentice-Hall International, 1996.
Lua MLA (9ú heag.)Gay, L. R., agus P. L. Diehl. Research Methods for Business and Management. Prentice-Hall International, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.