(1) Evolutionary Psychology: A Very Short Introduction Maryanne L. Fisher; T. Joel Wade ISBN: 9780198827931 Oxford University Press View at publisher
(2) The Critical Edition of the Works of C. G. Jung, Volume 1: Student Years in Basel: Philosophy, Medicine, Science, and Spiritualism, 1896–1900 C. G. Jung ISBN: 9780691269306 Princeton University Press View at publisher