APA引文

Mollenkopf, H., & Walker, A. (2020). Quality of Life in Old Age. Springer Netherlands.

Trích dẫn kiểu Chicago

Mollenkopf, Heidrun, và Alan Walker. Quality of Life in Old Age. Springer Netherlands, 2020.

MLA引文

Mollenkopf, Heidrun, và Alan Walker. Quality of Life in Old Age. Springer Netherlands, 2020.

警告：這些引文格式不一定是100％准確.