APA (7th ed.) Citation

Li, C., van der Hilst, R. D., Engdahl, E. R., & Burdick, S. (2008). A new global model for P wave speed variations in Earth's mantle. Geochemistry, geophysics, geosystems : G3, 9(5), np-n/a. https://doi.org/10.1029/2007GC001806

Chicago Style (17th ed.) Citation

Li, Chang, Robert D. van der Hilst, E. Robert Engdahl, and Scott Burdick. "A New Global Model for P Wave Speed Variations in Earth's Mantle." Geochemistry, Geophysics, Geosystems : G3 9, no. 5 (2008): np-n/a. https://doi.org/10.1029/2007GC001806.

MLA (9th ed.) Citation

Li, Chang, et al. "A New Global Model for P Wave Speed Variations in Earth's Mantle." Geochemistry, Geophysics, Geosystems : G3, vol. 9, no. 5, 2008, pp. np-n/a, https://doi.org/10.1029/2007GC001806.