Παραπομπή APA

Tuganbaev, A. (2002). Rings close to regular.

Παραπομπή Chicago Style

Tuganbaev, Askar. Rings Close to Regular. Kluwer Academic Publishers, Dordrecht, 2002.

Παραπομπή MLA

Tuganbaev, Askar. Rings Close to Regular. 2002.