APA (7th ed.) Citation

Spence, W., Mendoza, C., Engdahl, E. R., Choy, G. L., & Norabuena, E. (1999). Seismic Subduction of the Nazca Ridge as Shown by the 1996–97 Peru Earthquakes. Springer.

Chicago Style (17th ed.) Citation

Spence, W., C. Mendoza, E. R. Engdahl, G. L. Choy, and E. Norabuena. Seismic Subduction of the Nazca Ridge as Shown by the 1996–97 Peru Earthquakes. Springer, 1999.

MLA (9th ed.) Citation

Spence, W., et al. Seismic Subduction of the Nazca Ridge as Shown by the 1996–97 Peru Earthquakes. Springer, 1999.