Reference String
                
                    Base Designation / Edition -Version / Title / Publisher / Publisher City
                    / Publisher State, Province / Publication Year / DOI / Publisher Website                
                Examples
                
                    Referencing Standards with Year of Approval:                
                
                    ASTM Standard C33, 2003, "Specification for Concrete Aggregates,"
                    ASTM International, West Conshohocken, PA, 2003, DOI: 10.1520/C0033-03,                    www.astm.org.
                
                
                    Referencing Standards (multiple revisions in same year):                
                
                    ASTM Standard C33, 2003a, "Specification for Concrete Aggregates,"
                    ASTM International, West Conshohocken, PA, 2003, DOI: 10.1520/C0033-03A,                    www.astm.org.
                
                
                    Referencing Standards (reapproved):                
                
                    ASTM Standard C33, 2003 (2006), "Specification for Concrete Aggregates,"
                    ASTM International, West Conshohocken, PA, 2006, DOI: 10.1520/C0033-03R06,                    www.astm.org.
                
                
                    Referencing Standards (editorial change):                
                
                    ASTM Standard C33, 2003e1, "Specification for Concrete Aggregates,"
                    ASTM International, West Conshohocken, PA, 2003, DOI: 10.1520/C0033-03E01,                    www.astm.org.