Cita APA (7a ed.)
Källén, A. (2011). Understanding biostatistics. John Wiley & Sons Inc..
Cita Chicago Style (17a ed.)
Källén, Anders. Understanding Biostatistics. Chichester, West Sussex, United Kingdom: John Wiley & Sons Inc., 2011.
Cita MLA (9a ed.)
Källén, Anders. Understanding Biostatistics. John Wiley & Sons Inc., 2011.
Precaución: Estas citas no son 100% exactas.