Cita APA (7th ed.)
Powers, D. L. (2006). Boundary value problems: And partial differential equations (5th ed.). Elsevier Academic Press.
Cita Chicago (17th ed.)
Powers, David L. Boundary Value Problems: And Partial Differential Equations. 5th ed. Amsterdam ; Boston: Elsevier Academic Press, 2006.
Cita MLA (9th ed.)
Powers, David L. Boundary Value Problems: And Partial Differential Equations. 5th ed. Elsevier Academic Press, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.