Berahim, Mazniha, et al. “Automatic Clothesline Retrieval Prototype With Humidity Alert System to Aid Clothesline Drawbacks for Reducing Laundry Worries”. Multidisciplinary Applied Research and Innovation, vol. 2, no. 1, Nov. 2020, pp. 401-10, https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/404.