APA-referens (7:e uppl.)

HAROWITZ, I. (1972). An introduction to quantitative busines analysis (2.). McGraw-Hill.

Chicago-referens (17:e uppl.)

HAROWITZ, IRA. An Introduction to Quantitative Busines Analysis. 2. Rio de Janeiro: McGraw-Hill, 1972.

MLA-referens (8:e uppl.)

HAROWITZ, IRA. An Introduction to Quantitative Busines Analysis. 2. McGraw-Hill, 1972.