Abd. Wafti, N. S., Cheah, K. Y., Siew, W. L., Choong, T. S. Y., & Abdullah, L. C. (2011). Regeneration and characterization of spent bleaching clay. Malaysian Palm Oil Board.

Abd. Wafti, Nur Sulihatimarsyila, Kien Yoo Cheah, Wai Lin Siew, Thomas Shean Yaw Choong, and Luqman Chuah Abdullah. Regeneration and Characterization of Spent Bleaching Clay. Malaysian Palm Oil Board, 2011.

Abd. Wafti, Nur Sulihatimarsyila, et al. Regeneration and Characterization of Spent Bleaching Clay. Malaysian Palm Oil Board, 2011.