Citazione Stile APA (7a Edizione)

Katok, A., & Strelcyn, J. (1986). Invariant manifolds, entropy and billiards; smooth maps with singularities. Springer-Verlag.

Citazione stile Chigago Style (17a edizione)

Katok, Anatole, e Jean-Marie Strelcyn. Invariant Manifolds, Entropy and Billiards; Smooth Maps with Singularities. Berlín: Springer-Verlag, 1986.

Citatione MLA (9a ed.)

Katok, Anatole, e Jean-Marie Strelcyn. Invariant Manifolds, Entropy and Billiards; Smooth Maps with Singularities. Springer-Verlag, 1986.