APA (7e ed.) Bronvermelding

FREUND, J. E. (1993). Elementary Business Statistics: The Modern Approach John E. Freud, Frank J. Williams, Benjamin M. Perles. Prentice Hall.

Chicago (17e ed.) Bronvermelding

FREUND, John E. Elementary Business Statistics: The Modern Approach John E. Freud, Frank J. Williams, Benjamin M. Perles. Prentice Hall, 1993.

MLA (8e ed.) Bronvermelding

FREUND, John E. Elementary Business Statistics: The Modern Approach John E. Freud, Frank J. Williams, Benjamin M. Perles. Prentice Hall, 1993.