Παραπομπή APA

Keller, J. B., & Antman, S. (1969). Bifurcation theory and nonlinear eigen value problems. W A Benjamin.

Παραπομπή Chicago Style

Keller, Joseph B., και Stuart Antman. Bifurcation Theory and Nonlinear Eigen Value Problems. New York: W A Benjamin, 1969.

Παραπομπή MLA

Keller, Joseph B., και Stuart Antman. Bifurcation Theory and Nonlinear Eigen Value Problems. W A Benjamin, 1969.