APA (7th ed.) Citation

Hörmander, L. (1969). Linear partial differential operators (Third revised printing.). Springer-Verlag.

Chicago Style (17th ed.) Citation

Hörmander, Lars. Linear Partial Differential Operators. Third revised printing. Berlin ; Heidelberg: Springer-Verlag, 1969.

MLA (9th ed.) Citation

Hörmander, Lars. Linear Partial Differential Operators. Third revised printing. Springer-Verlag, 1969.