Boyce, W. E., & DiPrima, R. C. Elementary differential equations and boundary value problems / by William E. Boyce, Edward P. Hamilton Professor Emeritus, Richard C. DiPrima, formerly Eliza Ricketts Foundation Professor, Department of Mathematical Sciences, Rensselaer Polytechnic Institute. (10th edition [International edition].). Hoboken, NJ : Wiley, c2013.

Boyce, William E., and Richard C. DiPrima. Elementary Differential Equations and Boundary Value Problems / By William E. Boyce, Edward P. Hamilton Professor Emeritus, Richard C. DiPrima, Formerly Eliza Ricketts Foundation Professor, Department of Mathematical Sciences, Rensselaer Polytechnic Institute. 10th edition [International edition]. Hoboken, NJ : Wiley, c2013.

Boyce, William E., and Richard C. DiPrima. Elementary Differential Equations and Boundary Value Problems / By William E. Boyce, Edward P. Hamilton Professor Emeritus, Richard C. DiPrima, Formerly Eliza Ricketts Foundation Professor, Department of Mathematical Sciences, Rensselaer Polytechnic Institute. 10th edition [International edition]. Hoboken, NJ : Wiley, c2013.