Andreescu, T., & Andreescu, T. F. (2004). 103 trignometry problems. Birkhauser.
Chicago Edition CitationAndreescu, Titu, and Titu; Feng Andreescu. 103 Trignometry Problems. Boston: Birkhauser, 2004.
MLA Edition CitationAndreescu, Titu, and Titu; Feng Andreescu. 103 Trignometry Problems. Birkhauser, 2004.
Warning: These citations may not always be 100% accurate.