APA引文

Frise, C., & Lapinsky, S. E. (2020). Two years later. Obstet Med.

Citação norma Chicago

Frise, Charlotte, and Stephen E. Lapinsky. "Two Years Later." Obstet Med 2020.

MLA引文

Frise, Charlotte, and Stephen E. Lapinsky. "Two Years Later." Obstet Med 2020.

警告：這些引文格式不一定是100％准確.