APA Edition Citation

Simpson, R. L. (1988). Essentials of symbolic logic. Routledge.

Chicago Edition Citation

Simpson, R. L. Essentials of Symbolic Logic. London ; New York: Routledge, 1988.

MLA Edition Citation

Simpson, R. L. Essentials of Symbolic Logic. Routledge, 1988.

Warning: These citations may not always be 100% accurate.