1. Aristotle. (350 BCE). The Nicomachean ethics of Aristotle. W. D. Ross (Trans.). Seattle, WA: Pacific Publishing Studio. 2011.
2. Bachofen, J. J. (1967). Myth, religion, and mother right: Selected writings of J. J. Bachofen. R. Manheim (Trans.). Princeton: Princeton University Press.
3. Bowlby, J. (1969). Attachment and loss. Volume I. Attachment. London: Hogarth Press and The Institute of Psychoanalysis.
4. Briffault, R. (1927). The mothers: A study of the origins of the sentiments and institutions. Vols. 1–3. London & New York: Macmillan.
5. Cai, H. (1997). Une société sans père ni mari. Les Na de Chine. Paris: Presses Universitaires de France. In English: Society without fathers or husbands. The Na of China. Trans. Asti Hustvedt. N. Y.: Zone Books. 2001.