APA (7th ed.) Citation

Knox, J. S. (1919). Personal efficiency. Knox Business Book Co..

Chicago Style (17th ed.) Citation

Knox, James Samuel. Personal Efficiency. Cleveland, O.: Knox Business Book Co., 1919.

MLA (9th ed.) Citation

Knox, James Samuel. Personal Efficiency. Knox Business Book Co., 1919.

Warning: These citations may not always be 100% accurate.