RUJUKAN
i. https://online.anyflip.com/ueasa/kpzw/mobil
e/
ii. https://issuu.com/thiyashini/docs/etika_dan_
peradaban
iii. https://anyflip.com/ueasa/kpzw/basic
iv. http://myscholar.umk.edu.my/handle/123456
789/2245
v. https://fliphtml5.com/krbac/hvjz/basic
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