PT - JOURNAL ARTICLE AU - William F. Sharpe TI - Major Investment Styles AID - 10.3905/jpm.1978.408628 DP - 1978 Jan 31 TA - The Journal of Portfolio Management PG - 68--74 VI - 4 IP - 2 4099 - https://pm-research.com/content/4/2/68.short 4100 - https://pm-research.com/content/4/2/68.full