APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Eicher, Don L. Geologic Time. Englewood Cliffs, N. J: Prentice-Hall, 1976.

MLA (9th ed.) Citation

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