Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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