© Penerbit Universiti Sains Malaysia, 2018. This work is licensed under the terms of the Creative Commons Attribution (CC BY)(http://creativecommons.org/licenses/by/4.0/)
Except where otherwise noted, this item's license is described as: © Penerbit Universiti Sains Malaysia, 2018. This work is licensed under the terms of the Creative Commons Attribution (CC BY)(http://creativecommons.org/licenses/by/4.0/)