Andreescu, T., & Feng , Z. (2005). One hundred and three trigonometry Problems: From the training of the USA IMO Team. Springer (India) Pvt. Ltd..
Chicago Stili AlıntıAndreescu, Titu, ve Zuming Feng. One Hundred and Three Trigonometry Problems: From the Training of the USA IMO Team. New Delhi: Springer (India) Pvt. Ltd., 2005.
MLA AlıntıAndreescu, Titu, ve Zuming Feng. One Hundred and Three Trigonometry Problems: From the Training of the USA IMO Team. Springer (India) Pvt. Ltd., 2005.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..