Lang, S. (1987). Calculus of several variables. New York: Springer-Verlag.
Trích dẫn kiểu ChicagoLang, Serge. Calculus of Several Variables. New York: Springer-Verlag, 1987.
MLA CitationLang, Serge. Calculus of Several Variables. New York: Springer-Verlag, 1987.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.