Fraknoi, Andrew. "Introduction to the Solar System - Sample Syllabus". OER Commons. Institute for the Study of Knowledge Management in Education, 06 Jan. 2017. Web. 22 Dec. 2024. <https://oercommons.org/authoring/19408-introduction-to-the-solar-system-sample-syllabus>.
Fraknoi, A. (2017, January 06). Introduction to the Solar System - Sample Syllabus. OER Commons. Retrieved December 22, 2024, from https://oercommons.org/authoring/19408-introduction-to-the-solar-system-sample-syllabus.