Reference

http://www.statistics.gov.my/portal/index.php?lang=en

http://www.malaxi.com/population_size_age_structure2001_2010.html

http://www.infernalramblings.com/articles/Malaysian_Government/510/

http://portalfsss.um.edu.my/portal/uploadFolder/pdf/SYED%20ABD%20RAZAK%20B.%20SAYED%20MAHADI%20-%20PERUBAHAN%20STRUKTUR%20UMUR%20PENDUDUK%20%20IMPAK%20PEMBANGUNAN%20DAN%20CADANGAN%20KEPADA%20PEMBANGUNAN%20NEGARA.pdf

http://www.sabah.net.my/juipri/penduduk.html