Sarah C. Sherwood; Jo Anne Van Tilburg; Casey R. Barrier; Mark Horrocks; Richard K. Dunn; José Miguel Ramírez-Aliaga (2019). New excavations in Easter Island's statue quarry: Soil fertility, site formation and chronology. 111. Journal of Archaeological Science. doi:10.1016/j.jas.2019.104994. ISSN0305-4403.
Sarah C. Sherwood; Jo Anne Van Tilburg; Casey R. Barrier; Mark Horrocks; Richard K. Dunn; José Miguel Ramírez-Aliaga (2019). New excavations in Easter Island's statue quarry: Soil fertility, site formation and chronology. 111. Journal of Archaeological Science. doi:10.1016/j.jas.2019.104994. ISSN0305-4403.