APA
Engle R. F., Gallo Giampiero M & National Bureau Of Economic Research. (2003). A multiple indicators model for volatility using intra-daily data. Cambridge, MA: NBER.
Chicago
Engle Robert F, Gallo Giampiero M and National Bureau Of Economic Research. 2003. A multiple indicators model for volatility using intra-daily data. Cambridge, MA: NBER.
Harvard
Engle R. F., Gallo Giampiero M and National Bureau Of Economic Research. (2003). A multiple indicators model for volatility using intra-daily data. Cambridge, MA: NBER.
MLA
Engle Robert F, Gallo Giampiero M and National Bureau Of Economic Research. A multiple indicators model for volatility using intra-daily data. Cambridge, MA: NBER. 2003.