Chong, C. wha, C. L. Law, M. W. Cloke, L. C. Abdullah, dan W. R. Wan Daud. Kinetics of Mass Transfer, Colour, Total Polyphenol and Texture Change of Manilkara Zapota During Convective Air Drying. Vol. 9, no. 1, Desember 2009, hlm. 47-58, https://journal.ugm.ac.id/v3/AJChE/article/view/7710.