CHURCHILL, R. V. Forier, series and boundary value problems#Ruel V. Churchill. McGraw Hill.
Chicago-стиль цитированияCHURCHILL, Ruel V. Forier, Series and Boundary Value Problems#Ruel V. Churchill. McGraw Hill.
MLA-цитированиеCHURCHILL, Ruel V. Forier, Series and Boundary Value Problems#Ruel V. Churchill. McGraw Hill.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.