Hejj, A. “Jung, Ledig Sucht: Die Welt Der Singles: Young Single Person Is Looking for Someone: The World of Single Persons”. Journal of Family Research, vol. 9, no. 2, Sept. 1997, pp. p. 26-47, https://ubp.uni-bamberg.de/jfr/index.php/jfr/article/view/551.