Pring, M. J. (1993). Martin Pring on market momentum. McGraw-Hill.
Chicago Style aipamenaPring, Martin J. Martin Pring on Market Momentum. New York: McGraw-Hill, 1993.
MLA aipamenaPring, Martin J. Martin Pring on Market Momentum. McGraw-Hill, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.