Greenspan, D. (1968). Introduction to calculus. Harper & Row.
Cita Chicago (17th ed.)Greenspan, Donald. Introduction to Calculus. New York: Harper & Row, 1968.
Cita MLA (9th ed.)Greenspan, Donald. Introduction to Calculus. Harper & Row, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.