Ahrenfeldt, L. J., Lindahl-Jacobsen, R., Möller, S., Christensen, K., Hvidtjørn, D., & Hvidt, N. C. (2015). Differences in Religiousness in Opposite-Sex and Same-Sex Twins in a Secular Society. Twin Res Hum Genet.

Ahrenfeldt, Linda J., Rune Lindahl-Jacobsen, Sören Möller, Kaare Christensen, Dorte Hvidtjørn, and Niels Christian Hvidt. "Differences in Religiousness in Opposite-Sex and Same-Sex Twins in a Secular Society." Twin Res Hum Genet 2015.

Ahrenfeldt, Linda J., et al. "Differences in Religiousness in Opposite-Sex and Same-Sex Twins in a Secular Society." Twin Res Hum Genet 2015.