APA (7th ed.) Zitazioa
Barnard, W., & Wallace, T. F. (1994). The innovation edge: Creating strategic breakthroughs using the voice of the customer. Omne�o.
Chicago Style (17th ed.) Zitazioa
Barnard, William, eta Thomas F. Wallace. The Innovation Edge: Creating Strategic Breakthroughs Using the Voice of the Customer. Essex Junction, VT: Omne�o, 1994.
MLA (9th ed.) Zitazioa
Barnard, William, eta Thomas F. Wallace. The Innovation Edge: Creating Strategic Breakthroughs Using the Voice of the Customer. Omne�o, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.