APA (7th ed.) Zitazioa

EICHER, D. L. (1980). History of the earth. Prentice-Hall.

Chicago Style (17th ed.) Zitazioa

EICHER, Don L. History of the Earth. Englewood Cliffs, N.J.: Prentice-Hall, 1980.

MLA (9th ed.) Zitazioa

EICHER, Don L. History of the Earth. Prentice-Hall, 1980.