Cita APA (7th ed.)

Williamson, R. E. (1986). Introduction to differential equations: ODE, PDE, and series. Prentice-Hall.

Cita Chicago (17th ed.)

Williamson, Richard E. Introduction to Differential Equations: ODE, PDE, and Series. Englewood Cliffs, N.J: Prentice-Hall, 1986.

Cita MLA (9th ed.)

Williamson, Richard E. Introduction to Differential Equations: ODE, PDE, and Series. Prentice-Hall, 1986.