APA ציטוט

Christensen, K., Kyvik, K. O., Holm, N. V., & Skytthe, A. (2011). Register-based research on twins.

Citação norma Chicago

Christensen, Kaare, Kirsten Ohm Kyvik, Niels V. Holm, and Axel Skytthe. Register-based Research On Twins. 2011.

ציטוט MLA

Christensen, Kaare, Kirsten Ohm Kyvik, Niels V. Holm, and Axel Skytthe. Register-based Research On Twins. 2011.