Thorpe S.K.S.; Holder R.L., and Crompton R.H.. PREMOG - Supplementry Info(нявызн.)(недаступная спасылка). Origin of Human Bipedalism As an Adaptation for Locomotion on Flexible Branches. Primate Evolution & Morphology Group (PREMOG), the Department of Human Anatomy and Cell Biology, the School of Biomedical Sciences at the University of Liverpool (24 May2007). Архівавана з першакрыніцы 17 ліпеня 2007. Праверана 1 лістапада 2007.
Thorpe S.K.S.; Holder R.L., and Crompton R.H.. PREMOG - Supplementry Info(нявызн.)(недаступная спасылка). Origin of Human Bipedalism As an Adaptation for Locomotion on Flexible Branches. Primate Evolution & Morphology Group (PREMOG), the Department of Human Anatomy and Cell Biology, the School of Biomedical Sciences at the University of Liverpool (24 May2007). Архівавана з першакрыніцы 17 ліпеня 2007. Праверана 1 лістапада 2007.