ASTM Committee D-18 on Soil and Rock for Engineering Purposes. (1970). Special procedures for testing soil and rock for engineering purposes (5th ed.). American Society for Testing and Materials.
Chicago Style (17th ed.) CitationASTM Committee D-18 on Soil and Rock for Engineering Purposes. Special Procedures for Testing Soil and Rock for Engineering Purposes. 5th ed. Philadelphia: American Society for Testing and Materials, 1970.
MLA (9th ed.) CitationASTM Committee D-18 on Soil and Rock for Engineering Purposes. Special Procedures for Testing Soil and Rock for Engineering Purposes. 5th ed. American Society for Testing and Materials, 1970.
Warning: These citations may not always be 100% accurate.