APA引文

Ahrenfeldt, L. J., Otavova, M., Christensen, K., & Lindahl-Jacobsen, R. (2020). Sex and age differences in COVID-19 mortality in Europe. Wien Klin Wochenschr.

Citação norma Chicago

Ahrenfeldt, Linda Juel, Martina Otavova, Kaare Christensen, and Rune Lindahl-Jacobsen. "Sex and Age Differences in COVID-19 Mortality in Europe." Wien Klin Wochenschr 2020.

MLA引文

Ahrenfeldt, Linda Juel, Martina Otavova, Kaare Christensen, and Rune Lindahl-Jacobsen. "Sex and Age Differences in COVID-19 Mortality in Europe." Wien Klin Wochenschr 2020.

警告：這些引文格式不一定是100％准確.