Wibowo AS, Singh M, Reeder KM, Carter JJ, Kovach AR, Meng W, et al. (September 2013). "Structures of human folate receptors reveal biological trafficking states and diversity in folate and antifolate recognition". Proceedings of the National Academy of Sciences of the United States of America. 110 (38): 15180–8. Bibcode:2013PNAS..11015180W. doi:10.1073/pnas.1308827110. PMC 3780903. PMID 23934049. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3780903