APA
Freund J. E., .Elementary business statistics : the modern approach / John E. Freund, Frank J. Williams, Benjamin M. Perles. Englewood Cliffs, N.J. : Prentice Hall, 1993: Englewood Cliffs, N.J. : Prentice Hall, 1993.
Chicago
Freund John E, .Elementary business statistics : the modern approach / John E. Freund, Frank J. Williams, Benjamin M. Perles. Englewood Cliffs, N.J. : Prentice Hall, 1993: Englewood Cliffs, N.J. : Prentice Hall, 1993.
Harvard
Freund J. E., .Elementary business statistics : the modern approach / John E. Freund, Frank J. Williams, Benjamin M. Perles. Englewood Cliffs, N.J. : Prentice Hall, 1993: Englewood Cliffs, N.J. : Prentice Hall, 1993.
MLA
Freund John E, .Englewood Cliffs, N.J. : Prentice Hall, 1993: Englewood Cliffs, N.J. : Prentice Hall, 1993. .