APA (7th ed.) Citation

Skinner, E. M., White, R. S., & Kramer, H. E. (1916). Credits and collections. La Salle, extension university.

Chicago Style (17th ed.) Citation

Skinner, Edward M., Reuben Stratin White, and Horace Elliot Kramer. Credits and Collections. Chicago: La Salle, extension university, 1916.

MLA (9th ed.) Citation

Skinner, Edward M., et al. Credits and Collections. La Salle, extension university, 1916.