International Subcommission on Stratigraphic Classification of IUGS Commission on Stratigraphy & Hedberg, H. D. (1976). International stratigraphic guide: A guide to stratigraphic classification, terminology and procedure. Wiley.
Chicago Style (17th ed.) CitationInternational Subcommission on Stratigraphic Classification of IUGS Commission on Stratigraphy and Hollis D. Hedberg. International Stratigraphic Guide: A Guide to Stratigraphic Classification, Terminology and Procedure. New York: Wiley, 1976.
MLA (9th ed.) CitationInternational Subcommission on Stratigraphic Classification of IUGS Commission on Stratigraphy and Hollis D. Hedberg. International Stratigraphic Guide: A Guide to Stratigraphic Classification, Terminology and Procedure. Wiley, 1976.
Warning: These citations may not always be 100% accurate.