APA (7th ed.) Citation

International Geological Congress, Topley, W., Broeck, E. v. d., & Purves, J. (1888). Explications des excursions. [s.n.].

Chicago Style (17th ed.) Citation

International Geological Congress, William Topley, Ernest van den Broeck, and J. Purves. Explications Des Excursions. Londres: [s.n.], 1888.

MLA (9th ed.) Citation

International Geological Congress, et al. Explications Des Excursions. [s.n.], 1888.