APA-viite

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.

Chicago-tyylinen lähdeviittaus

Rosero Bixby, Luis, ja Rafaela Sierra Ramos. X-ray Screening Seems to Reduce Gastric Cancer Mortality By Half in a Community-controlled Trial in Costa Rica. 2007.

MLA-viite

Rosero Bixby, Luis, ja Rafaela Sierra Ramos. X-ray Screening Seems to Reduce Gastric Cancer Mortality By Half in a Community-controlled Trial in Costa Rica. 2007.

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