APA引文

Mahoney, M. J. (1975). Letter: On abortion and neonatal mortality.

Citação norma Chicago

Mahoney, M J. Letter: On Abortion and Neonatal Mortality. 1975.

MLA引文

Mahoney, M J. Letter: On Abortion and Neonatal Mortality. 1975.

警告：這些引文格式不一定是100％准確.