Gardener, M. (2012). The Essential r reference. Indianapolis, IN: Wiley Pub., Inc..
Trích dẫn kiểu ChicagoGardener, Mark. The Essential R Reference. Indianapolis, IN: Wiley Pub., Inc., 2012.
Deismireacht MLAGardener, Mark. The Essential R Reference. Indianapolis, IN: Wiley Pub., Inc., 2012.
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