APA (7th ed.) Citation

Butts, I. R. (1855). The new business man's assistant, and ready reckoner. [The Author].

Chicago Style (17th ed.) Citation

Butts, I. R. The New Business Man's Assistant, and Ready Reckoner. Boston: [The Author], 1855.

MLA (8th ed.) Citation

Butts, I. R. The New Business Man's Assistant, and Ready Reckoner. [The Author], 1855.