Example: References List. The partial list below is an example of the author-date style, which is highly recommended for scientific material. Whichever reference style is chosen, format consistency throughout the list is imperative. For guidance, you are encouraged to refer to a respected style manual, e.g., The Chicago Manual of Style. Note that multi-line reference items are single spaced and all lines after the first line are indented. There is a blank line between each item. REFERENCES CITED Brandsberg-Dahl, S. “Imaging-Inversion and Migration Velocity Analysis in the Scattering-Angle/Azimuth Domain.” Ph.D. diss., Colorado School of Mines, 2001. Buckley, R. “Diffraction by a Random Phase-Changing Screen: A Numerical Experiment.” Journal of Atmospheric and Terrestrial Physics 37 (1975):1431-46. Burridge, R., M.V. De Hoop, D. Miller, and C. Spencer. “Multiparameter Inversion in Anisotropic Elastic Media.” Geophysics Journal International 134 (1998):757-77. Chazarain, J., and A. Piriou. Introduction to the Theory of Linear PartialDdifferential Equations. North-Holland: Amsterdam, 1982. Claerbout, J. “Coarse Grid Calculations of Wave in Inhomogeneous Media with Application to Delineation of Complicated Seismic Structure.” Geophysics 35 (1970):407-18. Claerbout, J. Imaging the Earth's Interior. Blackwell Scientific Publications, Inc.: Cambridge, MA, 1985. Clayton, R. W. Common Midpoint Migration. in SEP-14. Stanford Exploration Project (1978): 21-36. Collins, M. D. “ Applications and Time-Domain Solution of Higher-Order Parabolic Equations in Underwater Acoustics.” Journal of Acoustical Society of America 86 (1989):1097-1102. Dahlen, F. A. and Tromp, J. Theoretical Global Seismology. Princeton University Press: Princeton, 1998. De Bruin, C. G. M., C. P. A., Wapenaar and A. J. Berkhout. “Angle-Dependent Reflectivity by Means of Prestack Migration.” Geophysics 55 (1990):1223-34. De Hoop, A. T. “Convergence Criterion for the Time-Domain Iterative Born Approximation to Scattering by an Inhomogeneous, Dispersive Object.” Journal of the Optical Society of America A 8 (1991): 1256-60. De Hoop, M. V. “Generalization of the Bremmer Coupling Series.” Journal of Mathematical Physics 37 (1996):3246-82. . “Direct, Leading-Order Asymptotic, Inverse Scattering Based on the Generalized Bremmer Series.” In Mathematical and Numerical Aspects of Wave Propagation edited by J. A. DeSanto, 249-53. Philadelphia: SAIM, 1998. 154