Urban, G. L. (1993). Design and marketing of new products (2nd ed.). Prentice-Hall.
Cita Chicago (17th ed.)Urban, Glen L. Design and Marketing of New Products. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1993.
Cita MLA (9th ed.)Urban, Glen L. Design and Marketing of New Products. 2nd ed. Prentice-Hall, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.