APA-referens (7:e uppl.)

LEVIN RICHARD I. (1979). STATISTICS FOR MANAGEMENT. PRENTICE HALL.

Chicago-referens (17:e uppl.)

LEVIN RICHARD I. STATISTICS FOR MANAGEMENT. INDIA NEW DLHI: PRENTICE HALL, 1979.

MLA-referens (9:e uppl.)

LEVIN RICHARD I. STATISTICS FOR MANAGEMENT. PRENTICE HALL, 1979.