Twomlow, S. J., Parkinson, R. J., & Reid, I. (1990). Soil loosening and drainage of structurally unstable silty soils. Journal of hydrology (Amsterdam), 121(1), 63-83. https://doi.org/10.1016/0022-1694(90)90225-M
Chicago Style (17th ed.) CitationTwomlow, Stephen J., Robert J. Parkinson, and Ian Reid. "Soil Loosening and Drainage of Structurally Unstable Silty Soils." Journal of Hydrology (Amsterdam) 121, no. 1 (1990): 63-83. https://doi.org/10.1016/0022-1694(90)90225-M.
MLA (9th ed.) CitationTwomlow, Stephen J., et al. "Soil Loosening and Drainage of Structurally Unstable Silty Soils." Journal of Hydrology (Amsterdam), vol. 121, no. 1, 1990, pp. 63-83, https://doi.org/10.1016/0022-1694(90)90225-M.
Warning: These citations may not always be 100% accurate.