1. Ahmad AG, Rahman HFA (2010) Treatment of salt attack and rising damp in heritage buildings in Penang, Malaysia. J Constr Dev Ctries 15(1)
2. Ahmad AG (1993) Conservation of British colonial buildings built between 1800 and 1930 in Malaysia. PhD thesis, University of Sheffield
3. Jamal DHD, Ramli Z (2016) Peranan Bangunan Bersejarah Dalam Membentuk Jatidiri Masyarakat: Tinjauan di Taiping, Perak. Prosiding Seminar Antarabangsa Arkeologi, Sejarah, Budaya dan Bahasa di Alam Melayu Nusantara (ASBAM) ke 5. Makassar
4. Cheng EW, Ma S-Y (2009) Heritage conservation through private donation: the case of dragon garden in Hong Kong. Int J Herit Stud 15(6)
5. Historic Building Definition. Institute of Historic Building Conservation. United Kingdom. https://www.designingbuildings.co.uk/wiki/Historic_buildings_definition#:~:text=An%20historic%20building%20is%20generally,to%20be%20made%20concerning%20it