Rosero Bixby, L., & Sierra Ramos, R. (2007). X-ray screening seems to reduce gastric cancer mortality by half in a community-controlled trial in Costa Rica.
Citación estilo ChicagoRosero Bixby, Luis, y Rafaela Sierra Ramos. X-ray Screening Seems to Reduce Gastric Cancer Mortality By Half in a Community-controlled Trial in Costa Rica. 2007.
MLA引文Rosero Bixby, Luis, y Rafaela Sierra Ramos. X-ray Screening Seems to Reduce Gastric Cancer Mortality By Half in a Community-controlled Trial in Costa Rica. 2007.
警告：这些引文格式不一定是100％准确.