Cita APA

Elwood, J. M., & McBride, M. L. (1979). Contrasting effects of maternal fertility and birth rank on the occurrence of neural tube defects.

Citación estilo Chicago

Elwood, J M., y M L. McBride. Contrasting Effects of Maternal Fertility and Birth Rank On the Occurrence of Neural Tube Defects. 1979.

Cita MLA

Elwood, J M., y M L. McBride. Contrasting Effects of Maternal Fertility and Birth Rank On the Occurrence of Neural Tube Defects. 1979.