APA
Bell E. . B. A. . H. B., . (2019). Business research methods (2nd ed.). UK: Oxford University Press.
Chicago
Bell Emma Bryman Alan Harley Bill, . 2019. Business research methods (2nd ed.). UK: Oxford University Press.
Harvard
Bell E. . B. A. . H. B., . (2019). Business research methods (2nd ed.). UK: Oxford University Press.
MLA
Bell Emma Bryman Alan Harley Bill, . Business research methods (2nd ed.). UK: Oxford University Press. 2019.