Beiler, Eric. "Guitar Cost Analysis". OER Commons. Institute for the Study of Knowledge Management in Education, 05 Dec. 2018. Web. 22 Jul. 2024. <https://oercommons.org/authoring/50553-guitar-cost-analysis>.
Beiler, E. (2018, December 05). Guitar Cost Analysis. OER Commons. Retrieved July 22, 2024, from https://oercommons.org/authoring/50553-guitar-cost-analysis.