APA-referens (7:e uppl.)

Smith, L. H., & Williams, D. R. (1971). Statistical analysis for business: A conceptual approach. Wadsworth Pub.

Chicago-referens (17:e uppl.)

Smith, Lee H., och Donald R. Williams. Statistical Analysis for Business: A Conceptual Approach. Belmont, Calif: Wadsworth Pub, 1971.

MLA-referens (9:e uppl.)

Smith, Lee H., och Donald R. Williams. Statistical Analysis for Business: A Conceptual Approach. Wadsworth Pub, 1971.