1. Bergstrand, C. R., & Sinski, J. B. (2010). Swinging in America: Love, sex, and marriage in the 21st century. ABC-CLIO.
2. Bhugra, D. (1993). Cross-cultural aspects of jealousy. International Review of Psychiatry, 5(2–3), 271–280.
3. Branden, N. (1980/2008) The psychology of romantic love: Romantic love in an anti-romantic age. Penguin. (Original work published 1980).
4. Buss, D. M. (2000). The dangerous passion: Why jealousy is as necessary as love and sex. Free Press.
5. Cohen, M. T. (2015). An exploratory study of individuals in non-traditional, alternative relationships: How “open” are we? Sexuality & Culture, 20(2), 295–315.