Gurr, J. E. (1959). The principle of sufficient reason in some scholastic systems 1750-1900. The Marquette University.
Chicago Style (17th ed.) CitationGurr, John Edwin. The Principle of Sufficient Reason in Some Scholastic Systems 1750-1900. Milwaukee: The Marquette University, 1959.
MLA (9th ed.) CitationGurr, John Edwin. The Principle of Sufficient Reason in Some Scholastic Systems 1750-1900. The Marquette University, 1959.
Warning: These citations may not always be 100% accurate.