APA (7e ed.) Bronvermelding

Crawley, M. J. (2007). The R book. John Wiley.

Chicago (17e ed.) Bronvermelding

Crawley, Michael J. The R Book. Londres: John Wiley, 2007.

MLA (9e ed.) Bronvermelding

Crawley, Michael J. The R Book. John Wiley, 2007.