Cita APA (7th ed.)

Kelly, A. O. (1966). Continental drift: Is it a cometary impact phenomenon? (Rev.).

Cita Chicago (17th ed.)

Kelly, Allan O. Continental Drift: Is It a Cometary Impact Phenomenon? Rev. Carlsbad, Calif, 1966.

Cita MLA (9th ed.)

Kelly, Allan O. Continental Drift: Is It a Cometary Impact Phenomenon? Rev. 1966.