Παραπομπή APA

Nayfeh, A. H. (1973). Perturbation methods. Wiley Eastern.

Παραπομπή Chicago Style

Nayfeh, Ali Hasan. Perturbation Methods. New York: Wiley Eastern, 1973.

Παραπομπή MLA

Nayfeh, Ali Hasan. Perturbation Methods. Wiley Eastern, 1973.