Quadrino, Agostino. "Ghigo". OER Commons. Institute for the Study of Knowledge Management in Education, 21 Oct. 2013. Web. 13 May 2024. <https://oercommons.org/authoring/3995-ghigo>.
Quadrino, A. (2013, October 21). Ghigo. OER Commons. Retrieved May 13, 2024, from https://oercommons.org/authoring/3995-ghigo.