Cita APA (7th ed.)

BOYCE, W. E. (1969). Elementary differential equations and: Boundary value problems. Wiley.

Cita Chicago (17th ed.)

BOYCE, William E. Elementary Differential Equations and: Boundary Value Problems. New York: Wiley, 1969.

Cita MLA (9th ed.)

BOYCE, William E. Elementary Differential Equations and: Boundary Value Problems. Wiley, 1969.