Simmons, G. F. (1972). Differential equations with applications and historical notes. McGraw-Hill.
Chicago-стиль цитированияSimmons, George F. Differential Equations with Applications and Historical Notes. New York: McGraw-Hill, 1972.
MLA-цитированиеSimmons, George F. Differential Equations with Applications and Historical Notes. McGraw-Hill, 1972.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.