Kallen, A. (2011). Understanding biostatistics. John Wiley & Sons.
Chicago Style aipamenaKallen, Anders. Understanding Biostatistics. United Kingdom: John Wiley & Sons, 2011.
MLA aipamenaKallen, Anders. Understanding Biostatistics. John Wiley & Sons, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.