APA (7th ed.) Citation

Sladen, D. B. W., & Bourne, F. (1907). The secrets of the Vatican. J. B. Lippincott.

Chicago Style (17th ed.) Citation

Sladen, Douglas Brooke Wheelton, and Francis Bourne. The Secrets of the Vatican. Philadelphia: J. B. Lippincott, 1907.

MLA (9th ed.) Citation

Sladen, Douglas Brooke Wheelton, and Francis Bourne. The Secrets of the Vatican. J. B. Lippincott, 1907.