APA (7th ed.) Citation

Stratta, J. L., Berg, G. V., & Enkeboll, W. (1970). Preliminary report Peru earthquake of May 31, 1970. Earthquake Engineering Research Institute.

Chicago Style (17th ed.) Citation

Stratta, James L., Glen V. Berg, and William Enkeboll. Preliminary Report Peru Earthquake of May 31, 1970. California: Earthquake Engineering Research Institute, 1970.

MLA (8th ed.) Citation

Stratta, James L., et al. Preliminary Report Peru Earthquake of May 31, 1970. Earthquake Engineering Research Institute, 1970.