Vitasari, S. D., and S. Supahar. “Assessment Instrument of Scientific Literacy Skills on Motion and Simple Machines Learning Based on Nature of Science”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 40, no. 1, July 2018, pp. 108-19, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9095.