CAPPER, P. L., CASSIE, W. F., & GEDDES, J. D. (1971). Problems in engineering soils.--Ed. SI. Oxford and IBH.
Lua i Stíl Chicago (17ú heag.)CAPPER, P. Leonard, W. Fisher CASSIE, agus James D. GEDDES. Problems in Engineering Soils.--Ed. SI. New Dehli: Oxford and IBH, 1971.
Lua MLA (9ú heag.)CAPPER, P. Leonard, et al. Problems in Engineering Soils.--Ed. SI. Oxford and IBH, 1971.
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