Guffey, Sarah Katie, Timothy F. Slater, and Stephanie J. Slater. “Development Of The EGGS Exam Of GeoloGy Standards To Measure Students’ Understanding Of Common Geology Concepts”. Journal of Astronomy & Earth Sciences Education 4, no. 1 (June 6, 2017). Accessed October 16, 2024. https://journals.modernsciences.org/index.php/JAESE/article/view/79.