Gailan, T. K. P. (1989). Descriptive statistics (Revised edition.). Learning Resources Unit, National Teacher Training Center for the Health Professions, University of the Philippines Manila.
Chicago-referens (17:e uppl.)Gailan, Tarlochan Kaur Pabla. Descriptive Statistics. Revised edition. Manila: Learning Resources Unit, National Teacher Training Center for the Health Professions, University of the Philippines Manila, 1989.
MLA-referens (9:e uppl.)Gailan, Tarlochan Kaur Pabla. Descriptive Statistics. Revised edition. Learning Resources Unit, National Teacher Training Center for the Health Professions, University of the Philippines Manila, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.