APA (7th ed.) Citation

(1981). Introduction to perturbation techniques / Ali Hasan Nayfeh.

Chicago Style (17th ed.) Citation

Introduction to Perturbation Techniques / Ali Hasan Nayfeh. 1981.

MLA (9th ed.) Citation

Introduction to Perturbation Techniques / Ali Hasan Nayfeh. 1981.

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