1. Bunnel T. Views from above and below: the Petronas Twin Towers and/in contesting visions of development in contemporary Malaysia. Singapore Journal of Tropical Geography 1999; 20(1): 3-25.
2. Lim B, Heath T. What is skyline: a quantitative approach. In: Hayman H, editor. Architectural science: past, present and future. Proceedings of the Conference of the Australian and New Zealand Architectural Science Association. Sydney: Department of Architecture, University of Sydney. 1993: 23-32.
3. Ford LR. The urban skyline as a city classification system. Journal of Geography. 1976; 75 (3): 154-164.
4. Attoe W. Skylines: understanding and moulding urban silhouettes. Chichester: Wiley. 1981.
5. Gassner G. Elevations, icons and lines: the city abstracted through its skylines. Researching the spatial and social life of the city. Cities LAB. 2009; 69-86.