Jackson, S. T., Webb, R. S., Anderson, K. H., Overpeck, J. T., Webb III, T., Williams, J. W., & Hansen, B. C. S. (2000). Vegetation and environment in Eastern North America during the Last Glacial Maximum. Quaternary Science Reviews, 19(6), 489–508. https://doi.org/10.1016/s0277-3791(99)00093-1

Jackson, Stephen T., Robert S. Webb, Katharine H. Anderson, Jonathan T. Overpeck, Thompson Webb III, John W. Williams, and Barbara C. S. Hansen. “Vegetation and environment in Eastern North America during the Last Glacial Maximum.” Quaternary Science Reviews 19, no. 6 (February 2000): 489–508. https://doi.org/10.1016/s0277-3791(99)00093-1.

Jackson ST, Webb RS, Anderson KH, Overpeck JT, Webb III T, Williams JW, et al. Vegetation and environment in Eastern North America during the Last Glacial Maximum. Quaternary Science Reviews. 2000 Feb;19(6):489–508.

Jackson, Stephen T., et al. “Vegetation and environment in Eastern North America during the Last Glacial Maximum.” Quaternary Science Reviews, vol. 19, no. 6, Elsevier BV, Feb. 2000, pp. 489–508. Crossref, doi:10.1016/s0277-3791(99)00093-1.

Jackson ST, Webb RS, Anderson KH, Overpeck JT, Webb III T, Williams JW, Hansen BCS. Vegetation and environment in Eastern North America during the Last Glacial Maximum. Quaternary Science Reviews. Elsevier BV; 2000 Feb;19(6):489–508.