APA (7th ed.) Citation

Grant, F. L., & Hill, A. M. (1929). Commercial arithmetic. Longmans, Green, and Co.

Chicago Style (17th ed.) Citation

Grant, Frank L., and Alexander M. Hill. Commercial Arithmetic. London [etc.]: Longmans, Green, and Co, 1929.

MLA (9th ed.) Citation

Grant, Frank L., and Alexander M. Hill. Commercial Arithmetic. Longmans, Green, and Co, 1929.