Wohlwill, Arthur . "Logic Puzzle". OER Commons. Institute for the Study of Knowledge Management in Education, 13 Oct. 2016. Web. 22 Nov. 2024. <https://oercommons.org/authoring/17303-logic-puzzle>.
Wohlwill, A. (2016, October 13). Logic Puzzle. OER Commons. Retrieved November 22, 2024, from https://oercommons.org/authoring/17303-logic-puzzle.