, Y. D. P., & , D. S. (2012). SEMIGRUP FUZZY SMARANDACHE. [Yogyakarta] : Universitas Gadjah Mada.
Chicago Style Citation, YULIYANTI DIAN PRATIWI, and Dr.Budi Surodjo,M.Si. SEMIGRUP FUZZY SMARANDACHE. [Yogyakarta] : Universitas Gadjah Mada, 2012.
MLA引文, YULIYANTI DIAN PRATIWI, and Dr.Budi Surodjo,M.Si. SEMIGRUP FUZZY SMARANDACHE. [Yogyakarta] : Universitas Gadjah Mada, 2012.
警告：這些引文格式不一定是100％准確.