APA
                    Williams, . (2017). The Essentials of Data Science: Knowledge Discovery Using R. London: T&F.
                
                    Chicago
                    Williams, . 2017. The Essentials of Data Science: Knowledge Discovery Using R. London: T&F.
                
                    Harvard
                    Williams, . (2017). The Essentials of Data Science: Knowledge Discovery Using R. London: T&F.
                
                    MLA
                    Williams, . The Essentials of Data Science: Knowledge Discovery Using R. London: T&F. 2017.