Duff, P. M. D., Hallam, A., & Walton, E. K. (1967). Cyclic sedimentation. Elsevier.
Lua i Stíl Chicago (17ú heag.)Duff, Peter McLaren Donald, Anthony Hallam, agus Ewart Kendall Walton. Cyclic Sedimentation. Amsterdam ; London ; New York: Elsevier, 1967.
Lua MLA (8ú heag.)Duff, Peter McLaren Donald, et al. Cyclic Sedimentation. Elsevier, 1967.
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