John, F. (1982). Partial differential equations (Fourth edition.). Springer-Verlag.
Citazione stile Chigago Style (17a edizione)John, Fritz. Partial Differential Equations. Fourth edition. New York: Springer-Verlag, 1982.
Citatione MLA (8a ed.)John, Fritz. Partial Differential Equations. Fourth edition. Springer-Verlag, 1982.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.