JR, F. A. (1972). SCHAUM'SM OUTLINE OF THEORY AND PROBLEMS OF DIFFERENTIAL EQUATIONS. MaGraw-Hill.
Cita Chicago (17th ed.)JR, FRANK AYRES. SCHAUM'SM OUTLINE OF THEORY AND PROBLEMS OF DIFFERENTIAL EQUATIONS. Singapore: MaGraw-Hill, 1972.
Cita MLA (9th ed.)JR, FRANK AYRES. SCHAUM'SM OUTLINE OF THEORY AND PROBLEMS OF DIFFERENTIAL EQUATIONS. MaGraw-Hill, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.