Citazione Stile APA (7a Edizione)

Erickson, J. (1993). Craters, caverns, and canyons: Delving beneath the earth's surface. Facts on File.

Citazione stile Chigago Style (17a edizione)

Erickson, Jon. Craters, Caverns, and Canyons: Delving Beneath the Earth's Surface. New York: Facts on File, 1993.

Citatione MLA (9a ed.)

Erickson, Jon. Craters, Caverns, and Canyons: Delving Beneath the Earth's Surface. Facts on File, 1993.