APA (7th ed.) Citation

Eicher, D. L. (1976). Geologic time (2. ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Eicher, Don L. Geologic Time. 2. ed. Englewood Cliffs, NJ: Prentice-Hall, 1976.

MLA (9th ed.) Citation

Eicher, Don L. Geologic Time. 2. ed. Prentice-Hall, 1976.