1. Abdi H. 2003 Multivariate Analysis. Program in Cognition and Neurosciences. The University of Texas at Dallas, USA, pp 1–4.
2. Application of Statistical Process Control (SPC) in Manufacturing Industry in a Developing Country
3. Moh Y. 2017 Refined Bleached Deodorized Palm Oil Quality Prediction Using Partial Least Squares Regression Analysis Technique. Universiti Teknologi Malaysia, Johor Bahru, Malaysia.
4. Lei T. 2018 Predictor of Refined Bleached Deodorized Palm Oil Quality Using Kernel Partial least squares regression. Universiti Teknologi Malaysia, Johor Bahru, Malaysia.
5. Jolliffe I. 2002 Principal Component Analysis (2nd edition). Springer-Verlag: New York, NY.