Cita APA (7th ed.)

Kaplan, W. (1964). Elements of differential equations. Addison-Wesley.

Cita Chicago (17th ed.)

Kaplan, Wilfred. Elements of Differential Equations. Reading: Addison-Wesley, 1964.

Cita MLA (9th ed.)

Kaplan, Wilfred. Elements of Differential Equations. Addison-Wesley, 1964.