Cita APA (7th ed.)

Ortega y Gasset, J. (1971). The idea of principle in Leibnitz and the evolution of deductive theory ([1st ed.].). Norton.

Cita Chicago (17th ed.)

Ortega y Gasset, Jose. The Idea of Principle in Leibnitz and the Evolution of Deductive Theory. [1st ed.]. New York: Norton, 1971.

Cita MLA (8th ed.)

Ortega y Gasset, Jose. The Idea of Principle in Leibnitz and the Evolution of Deductive Theory. [1st ed.]. Norton, 1971.