Vortsman, H. (1993). Effective product to market management: A quality issue. Prentice-Hall.
Chicago Style aipamenaVortsman, H.R. Effective Product to Market Management: A Quality Issue. New York: Prentice-Hall, 1993.
MLA aipamenaVortsman, H.R. Effective Product to Market Management: A Quality Issue. Prentice-Hall, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.