Abdul Kadir, Radhiah, Mohd Ikram Mohammad, and Syaizwan Zahmir Zulkifli. 2018. “Assessment on Bird Conservation Status Found in Rubber Forest Plantation by Using IUCN and Regional Classification”. Journal of Science and Mathematics Letters 6 (December):47-60. https://doi.org/10.37134/jsml.vol6.5.2018.