Παραπομπή APA

Boyce, W. E. (1969). Elementary differential equations and boundary value problems. Wiley Eastern.

Παραπομπή Chicago Style

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

Παραπομπή MLA

Boyce, William E. Elementary Differential Equations and Boundary Value Problems. Wiley Eastern, 1969.