27x27 Magic Square
In-Text or Website Citation
Tue N. Vu, 27x27 Magic Square, 9/11/13, from Series Math Study Resource.
Hyperlink: http://www.seriesmathstudy.com/sms/content/27x27-magic-square
Hyperlink: http://www.seriesmathstudy.com/sms/content/27x27-magic-square