Zhang, Y. (2011). Combinatorial problems in mathematical competitions. East China Normal University Press World Scientific.
Chicago Style (17. basım) AtıfZhang, Yao. Combinatorial Problems in Mathematical Competitions. Shanghai, China, Singapore: East China Normal University Press World Scientific, 2011.
MLA (9th ed.) AtıfZhang, Yao. Combinatorial Problems in Mathematical Competitions. East China Normal University Press World Scientific, 2011.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..