Liu Y, Wu W, Hong W, Sun X, Wu J, Huang Q (April 2014). "Raltitrexed-based chemotherapy for advanced colorectal cancer". Clinics and Research in Hepatology and Gastroenterology. 38 (2): 219–25. doi:10.1016/j.clinre.2013.11.006. PMID24388340.
Liu Y, Wu W, Hong W, Sun X, Wu J, Huang Q (April 2014). "Raltitrexed-based chemotherapy for advanced colorectal cancer". Clinics and Research in Hepatology and Gastroenterology. 38 (2): 219–25. doi:10.1016/j.clinre.2013.11.006. PMID24388340.