Stakgold, I. (2001). Green's Functions and Boundary Value Problems. John Wiley & Saons.
Chicago-viite (17. p.)Stakgold, Ivar. Green's Functions and Boundary Value Problems. John Wiley & Saons, 2001.
MLA-viite (8. p.)Stakgold, Ivar. Green's Functions and Boundary Value Problems. John Wiley & Saons, 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.