Ahmad Nasyution bin Abdul Razak ; Anuar bin Alias http://e-journal.um.edu.my/filebank/published_article/9147/JDBE%20Vol%2015(2)%20-%20Landscape%20architecture%20as%20an%20entity%20of%20property%20development%20in%20Wilayah%20Persekutuan,%20Putrajaya.pdf.
,
2015