Brauer, F., & Nohel, J. A. (1968). Elementary differential equations: Principles, problems and solutions. W. A. Benjamin.
Citazione stile Chigago Style (17a edizione)Brauer, Fred, e John A. Nohel. Elementary Differential Equations: Principles, Problems and Solutions. Nueva York: W. A. Benjamin, 1968.
Citatione MLA (9a ed.)Brauer, Fred, e John A. Nohel. Elementary Differential Equations: Principles, Problems and Solutions. W. A. Benjamin, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.