Boyce, W. E. (1969). Elementary differential equations and boundary value problems. Wiley Eastern.
Chicago-стиль цитированияBoyce, William E. Elementary Differential Equations and Boundary Value Problems. New York: Wiley Eastern, 1969.
MLA-цитированиеBoyce, William E. Elementary Differential Equations and Boundary Value Problems. Wiley Eastern, 1969.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.