1. Smith A. L. and Ruppert Karl 1953 Excavations in House Mounds at Mayapan: II. Carnegie Institution of Washington, Department of Archaeology, Current Reports, No. 10, pp. 180-206. Cambridge.
2. Smith A. L. 1950 Uaxactun, Guatemala: Excavations of 1931- 1937. Carnegie Institution of Washington, Publication 588. Washington.