Davis, H. T. (1960). Introduction to nonlinear differential and integral equations. U.S. Atomic Energy Commission.
Chicago-referens (17:e uppl.)Davis, Harold T. Introduction to Nonlinear Differential and Integral Equations. [Washington]: U.S. Atomic Energy Commission, 1960.
MLA-referens (8:e uppl.)Davis, Harold T. Introduction to Nonlinear Differential and Integral Equations. U.S. Atomic Energy Commission, 1960.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.