Cita APA (7a ed.)

Waltman, P. E. (1986). A second course in elementary differential equations. Academic Press.

Cita Chicago Style (17a ed.)

Waltman, Paul E. A Second Course in Elementary Differential Equations. Orlando: Academic Press, 1986.

Cita MLA (8a ed.)

Waltman, Paul E. A Second Course in Elementary Differential Equations. Academic Press, 1986.