APA-referens (7:e uppl.)

GUPTA, C. (2012). AN INTRODUCTION TO STATISTICAL METHODS. VIKAS PUBLISHING HOUSE.

Chicago-referens (17:e uppl.)

GUPTA, C.B. AN INTRODUCTION TO STATISTICAL METHODS. NOIDA: VIKAS PUBLISHING HOUSE, 2012.

MLA-referens (9:e uppl.)

GUPTA, C.B. AN INTRODUCTION TO STATISTICAL METHODS. VIKAS PUBLISHING HOUSE, 2012.