, P. S. (2007). OPTIMIZATION SYNTHESIS CHITOSAN-XANTHAN GUM GEL FOR METAL ADSORPTION. [Yogyakarta] : Fak. MIPA Universitas Gadjah Mada.
Chicago Style Citation, Purwantiningsih Sugita. OPTIMIZATION SYNTHESIS CHITOSAN-XANTHAN GUM GEL FOR METAL ADSORPTION. [Yogyakarta] : Fak. MIPA Universitas Gadjah Mada, 2007.
MLA引文, Purwantiningsih Sugita. OPTIMIZATION SYNTHESIS CHITOSAN-XANTHAN GUM GEL FOR METAL ADSORPTION. [Yogyakarta] : Fak. MIPA Universitas Gadjah Mada, 2007.
警告：這些引文格式不一定是100％准確.