APA (7th ed.) Citation

Roll, R. (1984). A simple implicit measure of the effective bid-ask spread in an efficient market. [s.n.].

Chicago Style (17th ed.) Citation

Roll, Richard. A Simple Implicit Measure of the Effective Bid-ask Spread in an Efficient Market. [S.l.]: [s.n.], 1984.

MLA (9th ed.) Citation

Roll, Richard. A Simple Implicit Measure of the Effective Bid-ask Spread in an Efficient Market. [s.n.], 1984.