Cita APA (7th ed.)

Simmons, G. F., & Robertson, J. S. (1991). Differential equations with applications and historical notes (2a. ed.). McGraw Hill Inc.

Cita Chicago (17th ed.)

Simmons, George F., i John S. Robertson. Differential Equations with Applications and Historical Notes. 2a. ed. Nueva York: McGraw Hill Inc, 1991.

Cita MLA (9th ed.)

Simmons, George F., i John S. Robertson. Differential Equations with Applications and Historical Notes. 2a. ed. McGraw Hill Inc, 1991.