APA (7th ed.) Citation

Urban, W. M. (1897). A history of the principle of sufficient reason: Its metaphysical and logical formulations.

Chicago Style (17th ed.) Citation

Urban, Wilbur Marshall. A History of the Principle of Sufficient Reason: Its Metaphysical and Logical Formulations. Leipzig, 1897.

MLA (8th ed.) Citation

Urban, Wilbur Marshall. A History of the Principle of Sufficient Reason: Its Metaphysical and Logical Formulations. 1897.

Warning: These citations may not always be 100% accurate.