Não informado. (2003). Differential Equations. Consultants Bureau.
Chicagoスタイル(17版)引用形式Não informado. Differential Equations. New York: Consultants Bureau, 2003.
MLA(8版)引用形式Não informado. Differential Equations. Consultants Bureau, 2003.
警告: この引用は必ずしも正確ではありません.