WARD ROBERT W. (2004). OPTIONS AND OPTIONS TRADING. MCGRAW-HILL.
Chicago Style aipamenaWARD ROBERT W. OPTIONS AND OPTIONS TRADING. NEW YORK: MCGRAW-HILL, 2004.
MLA aipamenaWARD ROBERT W. OPTIONS AND OPTIONS TRADING. MCGRAW-HILL, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.