APA (7th ed.) Citation

Ingersoll, R. G. (1929). The works of Robert G. Ingersoll .. Ingersoll league.

Chicago Style (17th ed.) Citation

Ingersoll, Robert Green. The Works of Robert G. Ingersoll .. New York: Ingersoll league, 1929.

MLA (8th ed.) Citation

Ingersoll, Robert Green. The Works of Robert G. Ingersoll .. Ingersoll league, 1929.