Russell, I C.(1890). XXI. On the Physical History of the Triassio Formation in New Jersey and the Connecticut Valley. Annals of the New York Academy of Sciences, 1(1), 220-254. doi:10.1111/j.1749-6632.1890.tb55126.x

Russell, Israel C. "XXI. On the Physical History of the Triassio Formation in New Jersey and the Connecticut Valley". Annals of the New York Academy of Sciences, 1.1 ( 1890 ): 220-254.