Gaya APA

HAGIN, R, L. (2004). Investment Management Portfolio Diversification, Risk, and Timing—Fact and Fiction . Canada: John Wiley & Sons, Inc.,.

Gaya MLA

HAGIN, ROBERT, L.. "Investment Management Portfolio Diversification, Risk, and Timing—Fact and Fiction". Canada: John Wiley & Sons, Inc.,, 2004. Text.