"Two Converging Lines of Influence in Cultural Evolutionary Theory," American Anthropologist, 64, No.3, Pt.1, 524-547., 1962

"Two Converging Lines of Influence in Cultural Evolutionary Theory," American Anthropologist, 64, No.3, Pt.1, 524-547., 1962, Box: 123, Folder: 94. Morris Edward Opler papers, 14-25-3238. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/240749 Accessed November 05, 2025.