1.Please read file carefully.
2.When you writing memo, except your references, please use these two references also.
Amber. (2017, April 11). Apartment Automation: How to Smarten up Your Flat. “Apartment Living.” Retrieved from: https://www.forrent.com/blog/apt_life/apartment-au…
Litke, R. (1995, Mrrch/April). Smart Apartments. Retrieved from: