APA (7th ed.) Citation

Clark, E. B. (1891). Twelve months in Peru (1a. ed.). T. Fisher Unwin.

Chicago Style (17th ed.) Citation

Clark, E. B. Twelve Months in Peru. 1a. ed. Londres: T. Fisher Unwin, 1891.

MLA (9th ed.) Citation

Clark, E. B. Twelve Months in Peru. 1a. ed. T. Fisher Unwin, 1891.