Nayfeh, A. (1985). Problems in perturbation. John-Wiley and sons.
Chicago Edition CitationNayfeh, A.H. Problems in Perturbation. New York: John-Wiley and sons, 1985.
Cita MLANayfeh, A.H. Problems in Perturbation. John-Wiley and sons, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.