APA (7th ed.) Citation

Spencer Northcote, J., Allard, P., & Bronwlow, W. (1877). Rome souterraine. Lib. Académique.

Chicago Style (17th ed.) Citation

Spencer Northcote, J., Paul Allard, and W.R Bronwlow. Rome Souterraine. Paris: Lib. Académique, 1877.

MLA (9th ed.) Citation

Spencer Northcote, J., et al. Rome Souterraine. Lib. Académique, 1877.