APA
(2009). Study guide for use with Business statistics in practice. New York: Mc Graw Hill.
Chicago
2009. Study guide for use with Business statistics in practice. New York: Mc Graw Hill.
Harvard
(2009). Study guide for use with Business statistics in practice. New York: Mc Graw Hill.
MLA
Study guide for use with Business statistics in practice. New York: Mc Graw Hill. 2009.