Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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