@book{31848,
	author = {Muenchen, Robert A. and SpringerLink (Online service)},
	title = {R for SAS and SPSS Users},
	publisher = {Springer New York,},
	year = {2009.},
	series = {Statistics and Computing,},
	address = {New York, NY :},
	url = {http://dx.doi.org/10.1007/978-0-387-09418-2}
}