Crossley,J.N, & Crossley, J. N. (1972). What is mathematical logic? Dover Publications.
استشهاد بنمط شيكاغوCrossley,J.N, و John N. Crossley. What Is Mathematical Logic? New York: Dover Publications, 1972.
MLA استشهادCrossley,J.N, و John N. Crossley. What Is Mathematical Logic? Dover Publications, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.