APA引文

Robertson, J. H., & Woodend, B. (1993). Negative cytology preceding cervical cancer: Causes and prevention.

Citação norma Chicago

Robertson, J H., and B. Woodend. Negative Cytology Preceding Cervical Cancer: Causes and Prevention. 1993.

MLA引文

Robertson, J H., and B. Woodend. Negative Cytology Preceding Cervical Cancer: Causes and Prevention. 1993.

警告：這些引文格式不一定是100％准確.