Halberstadt, W. H. (1960). An introduction to modern logic: An elementary textbook of symbolic logic. Harper.
Chicago Style (17th ed.) CitationHalberstadt, William H. An Introduction to Modern Logic: An Elementary Textbook of Symbolic Logic. New York: Harper, 1960.
MLA (9th ed.) CitationHalberstadt, William H. An Introduction to Modern Logic: An Elementary Textbook of Symbolic Logic. Harper, 1960.
Warning: These citations may not always be 100% accurate.