Powers, D. L. (2006). Boundary value problems: And partial differential equations (Fifth edition.). Elsevier/Academic Press.
Chicago-referens (17:e uppl.)Powers, David L. Boundary Value Problems: And Partial Differential Equations. Fifth edition. Burlington, MA: Elsevier/Academic Press, 2006.
MLA-referens (9:e uppl.)Powers, David L. Boundary Value Problems: And Partial Differential Equations. Fifth edition. Elsevier/Academic Press, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.