APA (7th ed.) Citation

Nayfeh, A. H. (1981). Introduction to perturbation techniques. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Nayfeh, Ali Hasan. Introduction to Perturbation Techniques. New York: John Wiley and Sons, 1981.

MLA (8th ed.) Citation

Nayfeh, Ali Hasan. Introduction to Perturbation Techniques. John Wiley and Sons, 1981.

Warning: These citations may not always be 100% accurate.