Nicholls, A. (2016). Sams teach yourself R in 24 hours. Sams.
Cita Chicago (17th ed.)Nicholls, Andy. Sams Teach Yourself R in 24 Hours. Indianapolis, Indiana: Sams, 2016.
Cita MLA (9th ed.)Nicholls, Andy. Sams Teach Yourself R in 24 Hours. Sams, 2016.
Atenció: Aquestes cites poden no estar 100% correctes.