Citação norma APA

hassan, a., fouad, a., & el gindim salah. (1965). on the matrix method for solving linear- differential eqs. National Planning Institute.

Citação norma Chicago

hassan, ahmed, afaf fouad, and el gindim salah. On the Matrix Method for Solving Linear- Differential Eqs. cairo: National Planning Institute, 1965.

Citação norma MLA

hassan, ahmed, et al. On the Matrix Method for Solving Linear- Differential Eqs. National Planning Institute, 1965.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.