APA citiranje

Powell, G., Pharoah, P. O., & Cooke, R. W. (1987). Chromosomal defects and caesarean birth.

Citação norma Chicago

Powell, G., P O. Pharoah, and R W. Cooke. Chromosomal Defects and Caesarean Birth. 1987.

MLA citiranje

Powell, G., P O. Pharoah, and R W. Cooke. Chromosomal Defects and Caesarean Birth. 1987.