APA (7th ed.) Citation

Semper, I. J., Newman, J. H., Chesterton, G. K., Belloc, H., & Stevenson, R. L. (1928). A study of four outstanding books of Christian apologetics. Columbia College Library.

Chicago Style (17th ed.) Citation

Semper, I. J., John Henry Newman, G. K. Chesterton, Hilaire Belloc, and Robert Louis Stevenson. A Study of Four Outstanding Books of Christian Apologetics. Dubuque: Columbia College Library, 1928.

MLA (8th ed.) Citation

Semper, I. J., et al. A Study of Four Outstanding Books of Christian Apologetics. Columbia College Library, 1928.