APA (7th ed.) Citation

Nichols, K. M., & Silberling, N. J. (1977). Early Triassic (Smithian) ammonites of paleoequatorial affinity from the Chulitna terrane, south-central Alaska. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Nichols, K. M., and N. J. Silberling. Early Triassic (Smithian) Ammonites of Paleoequatorial Affinity from the Chulitna Terrane, South-central Alaska. Washington: United States Department of the Interior, Geological Survey, 1977.

MLA (9th ed.) Citation

Nichols, K. M., and N. J. Silberling. Early Triassic (Smithian) Ammonites of Paleoequatorial Affinity from the Chulitna Terrane, South-central Alaska. United States Department of the Interior, Geological Survey, 1977.