Differential Equations An Introduction for Engineers

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William E. Boyce and Richard C. DiPrima. Elementary Differential Equations and Boundary Value Problems 11th edition, John Wiley & Sons Inc., New York, NY, 2017. https://books.google.com/books?id=nYWcQgAACAAJ

C.H. Edwards and D.E. Penney. Differential Equations and Boundary Value Problems: Computing and Modeling 5th edition, Pearson, 2014. https://books.google.com/books?id=wuWvoAEACAAJ

Stanley J. Farlow. An Introduction to Differential Equations and Their Applications. McGraw-Hill, Inc., Princeton, NJ. 1994. (Published also by Dover Publications, 2006.) https://books.google.com/books?id=_ozWAAAAMAAJ

E.L. Ince. Ordinary Differential Equations Dover Publications, Inc., New York, NY. 1956. https://books.google.com/books?id=uYz-pqUD75gC

Jiří Lebl. Notes on Diffy Qs. Open-source publication. https://www.jirka.org/diffyqs

Carl Stitz and Jeff Zeager. Precalculus. Version 4. 2017. https://www.stitz-zeager.com/

William F. Trench. Elementary Differential Equations with Boundary Value Problems Books and Monographs. Book 9. 2013. https://digitalcommons.trinity.edu/mono/9

Dennis Zill and Warren Wright. Advanced Engineering Mathematics. 6th Edition, Jones & Bartlett Learning, 2016.