APA引文

Needleman, H. L. (1998). Childhood lead poisoning: The promise and abandonment of primary prevention.

Citação norma Chicago

Needleman, H L. Childhood Lead Poisoning: The Promise and Abandonment of Primary Prevention. 1998.

MLA引文

Needleman, H L. Childhood Lead Poisoning: The Promise and Abandonment of Primary Prevention. 1998.

警告：這些引文格式不一定是100％准確.