APA (7th ed.) Zitazioa

Doyle, A. C., & Collins, A. (2005). The lost world (abridged version): 3 (elementary level). Macmillan.

Chicago Style (17th ed.) Zitazioa

Doyle, Arthur Conan, eta Anne Collins. The Lost World (abridged Version): 3 (elementary Level). Oxford: Macmillan, 2005.

MLA (9th ed.) Zitazioa

Doyle, Arthur Conan, eta Anne Collins. The Lost World (abridged Version): 3 (elementary Level). Macmillan, 2005.