Simmons, G. F. (1984). Differential equations with applications and historical notes.
Chicago-стиль цитированияSimmons, George F. Differential Equations with Applications and Historical Notes. TATA McGraw-Hill Publishing Co., New Delhi, 1984.
MLA-цитированиеSimmons, George F. Differential Equations with Applications and Historical Notes. 1984.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.