APA引文

Alberman, E., Creasy, M., & Polani, P. E. (1973). Letter: Spontaneous abortion and neural tube defects.

Citação norma Chicago

Alberman, E., M. Creasy, and P E. Polani. Letter: Spontaneous Abortion and Neural Tube Defects. 1973.

MLA引文

Alberman, E., M. Creasy, and P E. Polani. Letter: Spontaneous Abortion and Neural Tube Defects. 1973.

警告：這些引文格式不一定是100％准確.