Table of circular and hyperbolic tangents and cotangents for radian arguments,
prepared by the Mathematical Tables Project, National Bureau of Standards.

APA Citation

Mathematical Tables Project (U.S.). (1947). Table of circular and hyperbolic tangents and cotangents for radian arguments. New York: Columbia university press.

MLA Citation

Mathematical Tables Project (U.S.). Table of Circular And Hyperbolic Tangents And Cotangents for Radian Arguments. New York: Columbia university press, 1947.

Warning: These citations may not always be complete (especially for serials).