APA
Engel C., Rodrigues Ap, Froot Ka & Frankel Ja. (1993). The Constrained Asset Share Estimation (Case) Method: Testing Mean-Variance Efficiency Of The U.S. Stock Market. Cambridge, MA: NBER.
Chicago
Engel C, Rodrigues Ap, Froot Ka and Frankel Ja. 1993. The Constrained Asset Share Estimation (Case) Method: Testing Mean-Variance Efficiency Of The U.S. Stock Market. Cambridge, MA: NBER.
Harvard
Engel C., Rodrigues Ap, Froot Ka and Frankel Ja. (1993). The Constrained Asset Share Estimation (Case) Method: Testing Mean-Variance Efficiency Of The U.S. Stock Market. Cambridge, MA: NBER.
MLA
Engel C, Rodrigues Ap, Froot Ka and Frankel Ja. The Constrained Asset Share Estimation (Case) Method: Testing Mean-Variance Efficiency Of The U.S. Stock Market. Cambridge, MA: NBER. 1993.
TextPublication details: Cambridge, MA NBER 1993ISBN: 
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