APA (7th ed.) Citation

Babson, R. W. (1948). Business barometers and investment (4th ed.). Harper.

Chicago Style (17th ed.) Citation

Babson, Roger Ward. Business Barometers and Investment. 4th ed. New York: Harper, 1948.

MLA (9th ed.) Citation

Babson, Roger Ward. Business Barometers and Investment. 4th ed. Harper, 1948.