Cita APA (7th ed.)

Ford, L. R. (1955). Differential equations (2nd.ed.). McGraw-hill.

Cita Chicago (17th ed.)

Ford, Lester R. Differential Equations. 2nd.ed. New York: McGraw-hill, 1955.

Cita MLA (9th ed.)

Ford, Lester R. Differential Equations. 2nd.ed. McGraw-hill, 1955.