Ballard, D. (1994). Foundational aspects of "non standard" mathematics. American Mathematical Society.
Chicago Style (17th ed.) CitationBallard, David. Foundational Aspects of "Non Standard" Mathematics. Providence: American Mathematical Society, 1994.
MLA (9th ed.) CitationBallard, David. Foundational Aspects of "Non Standard" Mathematics. American Mathematical Society, 1994.