APA (7e ed.) Bronvermelding

Hadley, G. F. (1968). Introduction to business statistics. Holden-Day.

Chicago (17e ed.) Bronvermelding

Hadley, George F. Introduction to Business Statistics. San Francisco: Holden-Day, 1968.

MLA (9e ed.) Bronvermelding

Hadley, George F. Introduction to Business Statistics. Holden-Day, 1968.