Secrist, H. (1920). Statistics in business: Their analysis, charting and use. McGraw-Hill.
Chicago-referens (17:e uppl.)Secrist, Horace. Statistics in Business: Their Analysis, Charting and Use. New York: McGraw-Hill, 1920.
MLA-referens (8:e uppl.)Secrist, Horace. Statistics in Business: Their Analysis, Charting and Use. McGraw-Hill, 1920.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.