Thomas Rutherford, A system of natural philosophy: being a course of lectures in Mechanics, Optics, Hydrostatics, and Astronomy, Volume 2 (1748), Chapter III., Of the inferior planets, 110. The changes made in the discs of the inferior planets do not prove the truth of the Copernican system, p.781-784 [google books] (pelo texto fica claro que a observação de Vênus "cheio" falsifica o modelo de Ptolomeu)
