APA način citiranja

Crooks, C. J., Card, T. R., & West, J. (2012). Defining upper gastrointestinal bleeding from linked primary and secondary care data and the effect on occurrence and 28 day mortality. BioMed Central.

Čikaški stil citiranja

Crooks, Colin John, Timothy Richard Card, i Joe West. Defining Upper Gastrointestinal Bleeding From Linked Primary and Secondary Care Data and the Effect On Occurrence and 28 Day Mortality. BioMed Central, 2012.

MLA način citiranja

Crooks, Colin John, Timothy Richard Card, i Joe West. Defining Upper Gastrointestinal Bleeding From Linked Primary and Secondary Care Data and the Effect On Occurrence and 28 Day Mortality. BioMed Central, 2012.