- Carl Zimmer. How the first farmers changed history. The New York times. 17 October 2016.
Dating the past
Dating archaeological sites
- Heather A. Hembrey, Barbara J. Little. How do archeologists figure out how old things are? Archeology for interpreters: a guide to knowledge of the resource. Archeology Program, National Park Service.
Universal Decimal Classification
- Google Scholar: advantages/limitations of Google Scholar. East Carolina University Libraries.
- Google Scholar: pros and cons of Google Scholar. Drew University Library.