APA (7e ed.) Bronvermelding

Newbold, P., Carlson, W. L., & Thorne, B. Statistics for business and economics (8th ed.).

Chicago (17e ed.) Bronvermelding

Newbold, Paul, William L. Carlson, en Betty Thorne. Statistics for Business and Economics. 8th ed.

MLA (8e ed.) Bronvermelding

Newbold, Paul, et al. Statistics for Business and Economics. 8th ed.