International Association of Applied Psychology. International Congress: Leyden (August 18-22, 1968). "The Applicability and Future Needs of Functional Age Measurements", August 18-22, 1968

International Association of Applied Psychology. International Congress: Leyden (August 18-22, 1968). "The Applicability and Future Needs of Functional Age Measurements", August 18-22, 1968, Box: 159, Folder: 10. Ross A. McFarland Papers, FSC-1. Special Collections. https://wright.libraryhost.com/repositories/2/archival_objects/53643 Accessed November 23, 2024.