Dyfyniad APA

Urrutia, J. J., Mata Jiménez, L., Trent, F., Cruz, J., Villatoro, E., & Alexander, R. (1975). Infection and Low Birth Weight in a Developing Country.

Dyfyniad Arddull Chicago

Urrutia, Juan José, Leonardo Mata Jiménez, Frederick Trent, Jose Cruz, Elba Villatoro, y Russell Alexander. Infection and Low Birth Weight in a Developing Country. 1975.

Dyfyniad MLA

Urrutia, Juan José, et al. Infection and Low Birth Weight in a Developing Country. 1975.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.