American Society for Testing and Materials, ASTM Committee D-18 on Soil and Rock for Engineering Purposes, Symposium on Laboratory Shear Strength of Soil, Townsend, F. C., & Yong, R. N. (1981). Laboratory shear strength of soil: A symposium, Chicago, Ill., 25th June, 1980. American Society for Testing and Materials.
Cita Chicago Style (17a ed.)American Society for Testing and Materials, ASTM Committee D-18 on Soil and Rock for Engineering Purposes, Symposium on Laboratory Shear Strength of Soil, Frank C. Townsend, y Raymond Nen Yong. Laboratory Shear Strength of Soil: A Symposium, Chicago, Ill., 25th June, 1980. Philadelphia: American Society for Testing and Materials, 1981.
Cita MLA (9a ed.)American Society for Testing and Materials, et al. Laboratory Shear Strength of Soil: A Symposium, Chicago, Ill., 25th June, 1980. American Society for Testing and Materials, 1981.