Peters, C. C., & Van Voorhis, W. R. (1935). Statistical procedures and their mathematical bases. State College, Pa., School of education, the Pennsylvania state college.
Chicago-referens (17:e uppl.)Peters, Charles Clinton, och Walter Roe Van Voorhis. Statistical Procedures and Their Mathematical Bases. Pennsylvania: State College, Pa., School of education, the Pennsylvania state college, 1935.
MLA-referens (9:e uppl.)Peters, Charles Clinton, och Walter Roe Van Voorhis. Statistical Procedures and Their Mathematical Bases. State College, Pa., School of education, the Pennsylvania state college, 1935.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.