APA (7th ed.) Zitazioa
Bierman, H. (2011). Improving competitiveness of industry. World Scientific.
Chicago Style (17th ed.) Zitazioa
Bierman, Harold. Improving Competitiveness of Industry. Singapore: World Scientific, 2011.
MLA (9th ed.) Zitazioa
Bierman, Harold. Improving Competitiveness of Industry. World Scientific, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.