APA Style
Andreescu, Titu, Gelca, Razvan. (2009).
Mathematical olympiad challenges (ed.2.).
Boston:
Birkhauser.
Chicago Style
Andreescu, Titu, Gelca, Razvan.
Mathematical olympiad challenges.
ed.2.
Boston:
Birkhauser,
2009.
Buku.
MLA Style
Andreescu, Titu, Gelca, Razvan.
Mathematical olympiad challenges.
ed.2.
Boston:
Birkhauser,
2009.
Buku.
Turabian Style
Andreescu, Titu, Gelca, Razvan.
Mathematical olympiad challenges.
ed.2.
Boston:
Birkhauser,
2009.
Buku.