APA引文

Ingrid Hamm, H. S. (2017). Demographic Change in Germany. Springer.

Chicago Style Citation

Ingrid Hamm, Helmut Seitz. Demographic Change in Germany. Springer, 2017.

MLA引文

Ingrid Hamm, Helmut Seitz. Demographic Change in Germany. Springer, 2017.

警告：這些引文格式不一定是100％准確.