Παραπομπή APA

Andreescu,Titu, & Enescu, B. (2004). Mathematical Olympiad Treasures. Birkhauser.

Παραπομπή Chicago Style

Andreescu,Titu, και Bogdan Enescu. Mathematical Olympiad Treasures. Boston: Birkhauser, 2004.

Παραπομπή MLA

Andreescu,Titu, και Bogdan Enescu. Mathematical Olympiad Treasures. Birkhauser, 2004.