BETTINGHAUS, E. P. (1972). The Nature of Proof. Bobbs-Merrill Educational Publishing.
Chicago Style (17th ed.) CitationBETTINGHAUS, Erwin P. The Nature of Proof. Bobbs-Merrill Educational Publishing, 1972.
MLA (8th ed.) CitationBETTINGHAUS, Erwin P. The Nature of Proof. Bobbs-Merrill Educational Publishing, 1972.
Warning: These citations may not always be 100% accurate.