Boyce, W. E. D. Elementary Differential Equations and Boundary Value Problems, Global Edition. Wiley.
Chicago-viite (17. p.)Boyce, William E; Diprima. Elementary Differential Equations and Boundary Value Problems, Global Edition. Wiley.
MLA-viite (9. p.)Boyce, William E; Diprima. Elementary Differential Equations and Boundary Value Problems, Global Edition. Wiley.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.