KELLS, L. M. (1960). Elementary differential equations. McGraw-Hill.
Chicagoスタイル(17版)引用形式KELLS, Lyman M. Elementary Differential Equations. New York: McGraw-Hill, 1960.
MLA(9版)引用形式KELLS, Lyman M. Elementary Differential Equations. McGraw-Hill, 1960.
警告: この引用は必ずしも正確ではありません.