Rosman, Katherine (2 January 2013). "Made by Hand, Learned Online". The Wall Street Journal. Archived from the original on 2 January 2021. Retrieved 7 April 2013.
Rosman, Katherine (2 January 2013). "Made by Hand, Learned Online". The Wall Street Journal. Archived from the original on 2 January 2021. Retrieved 7 April 2013.