Crossley,J.N, & Crossley, J. N. (1972). What is mathematical logic? Dover Publications.
Chicago-стиль цитированияCrossley,J.N, and John N. Crossley. What Is Mathematical Logic? New York: Dover Publications, 1972.
MLA-цитированиеCrossley,J.N, and John N. Crossley. What Is Mathematical Logic? Dover Publications, 1972.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.