APA-referens (7:e uppl.)

Babson, R. W. (1916). Business barometers used in the accumulation of money: A text book on applied economics for merchants, bankers and investors ((9th ed.) Issued Oct., 1916.). Babson's statistical organization.

Chicago-referens (17:e uppl.)

Babson, Roger Ward. Business Barometers Used in the Accumulation of Money: A Text Book on Applied Economics for Merchants, Bankers and Investors. (9th ed.) Issued Oct., 1916. Wellesley Hills, Mass.: Babson's statistical organization, 1916.

MLA-referens (8:e uppl.)

Babson, Roger Ward. Business Barometers Used in the Accumulation of Money: A Text Book on Applied Economics for Merchants, Bankers and Investors. (9th ed.) Issued Oct., 1916. Babson's statistical organization, 1916.