Afiqah Muhamad Jamil, Siti, et al. “A Stepwise Logistic Regression Analysis: An Application Toward Poultry Farm Data in Johor”. International Journal of Engineering & Technology, vol. 7, no. 3.28, Aug. 2018, pp. 68-71, https://doi.org/10.14419/ijet.v7i3.28.20968.