APA (7th ed.) Citation

Cai, L., & Chen, J. (1991). A Simple characterization of the Boolean hierarchy. Texas A & M University, Computer Science Dept..

Chicago Style (17th ed.) Citation

Cai, Liming, and Jianer Chen. A Simple Characterization of the Boolean Hierarchy. College Station, Tex.: Texas A & M University, Computer Science Dept., 1991.

MLA (9th ed.) Citation

Cai, Liming, and Jianer Chen. A Simple Characterization of the Boolean Hierarchy. Texas A & M University, Computer Science Dept., 1991.