APA (7th ed.) Citation

Poppe, B. B., Naab, D. A., & Derr, J. S. (1978). Seismograph station codes and characteristics. Dept. of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Poppe, Barbara B., Debbi A. Naab, and John S. Derr. Seismograph Station Codes and Characteristics. [Reston, Va.]: Dept. of the Interior, Geological Survey, 1978.

MLA (9th ed.) Citation

Poppe, Barbara B., et al. Seismograph Station Codes and Characteristics. Dept. of the Interior, Geological Survey, 1978.