Crossley,J.N, & Crossley, J. N. (1972). What is mathematical logic? Dover Publications.
Citación estilo ChicagoCrossley,J.N, and John N. Crossley. What Is Mathematical Logic? New York: Dover Publications, 1972.
Cita MLACrossley,J.N, and John N. Crossley. What Is Mathematical Logic? Dover Publications, 1972.
Warning: These citations may not always be 100% accurate.