Morris, M. (1942). Differential equations (Rev. ed.). Prentice-Hall.
Cita Chicago (17th ed.)Morris, Max. Differential Equations. Rev. ed. New York: Prentice-Hall, 1942.
Cita MLA (9th ed.)Morris, Max. Differential Equations. Rev. ed. Prentice-Hall, 1942.
Atenció: Aquestes cites poden no estar 100% correctes.