APA引文

Yule, W., & Lansdown, R. (1981). Blood lead concentrations and school performance.

Citação norma Chicago

Yule, William, and Richard Lansdown. Blood Lead Concentrations and School Performance. 1981.

MLA引文

Yule, William, and Richard Lansdown. Blood Lead Concentrations and School Performance. 1981.

警告：這些引文格式不一定是100％准確.