APA (7th ed.) Citation

Nayfeh. (1981). Introduction to pertubation techniques. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Nayfeh. Introduction to Pertubation Techniques. Toronto: John Wiley & Sons, 1981.

MLA (9th ed.) Citation

Nayfeh. Introduction to Pertubation Techniques. John Wiley & Sons, 1981.

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