APA (7th ed.) Citation

Paul, H. G., Kincheloe, I. M., & Ramsey, J. W. (1940). Junior units in English. Lyons & Carnahan.

Chicago Style (17th ed.) Citation

Paul, H. G., Isabel Mary Kincheloe, and James William Ramsey. Junior Units in English. Chicago: Lyons & Carnahan, 1940.

MLA (8th ed.) Citation

Paul, H. G., et al. Junior Units in English. Lyons & Carnahan, 1940.