APA (7th ed.) Citation

Dorner, I. A., Dorner, A. J., Mead, C. M., & Cunningham, R. T. (1887). System of Christian ethics. Clark.

Chicago Style (17th ed.) Citation

Dorner, I. A., August Johannes Dorner, Charles Marsh Mead, and R. T. Cunningham. System of Christian Ethics. Edinburgh: Clark, 1887.

MLA (9th ed.) Citation

Dorner, I. A., et al. System of Christian Ethics. Clark, 1887.