Adam 1977, pp. 50f, refers to base, column shaft plus capital. Adam, Jean-Pierre (1977), "À propos du trilithon de Baalbek: Le transport et la mise en oeuvre des mégalithes", Syria, 54 (1/2): 31–63 (50f.), doi:10.3406/syria.1977.6623
Jones 1993, pp. 23–38. Jones, Mark Wilson (1993), "One Hundred Feet and a Spiral Stair: The Problem of Designing Trajan's Column", Journal of Roman Archaeology, 6: 23–38, doi:10.1017/S1047759400011454, S2CID250348951
Jones 1993, pp. 23–38. Jones, Mark Wilson (1993), "One Hundred Feet and a Spiral Stair: The Problem of Designing Trajan's Column", Journal of Roman Archaeology, 6: 23–38, doi:10.1017/S1047759400011454, S2CID250348951