(1912). Problems in eugenics. The Eugenics Education Society.
Chicago-Zitierstil (17. Ausg.)Problems in Eugenics. Adelphi: The Eugenics Education Society, 1912.
MLA-Zitierstil (8. Ausg.)Problems in Eugenics. The Eugenics Education Society, 1912.
警告：这些引文格式不一定是100％准确.