Phanudulkitti, C., K. B. Farris, P. Makmee, and T. Kittisopee. “Deep Approach to Learning of Pharmacy Students: A Multilevel Analysis”. Pharmacy Education, vol. 18, Mar. 2018, pp. p 99-109, https://pharmacyeducation.fip.org/pharmacyeducation/article/view/585.