Dyfyniad APA

MacLennan, W. J., Hamilton, J. C., & Darmady, J. M. (1980). The effects of season and stage of pregnancy on plasma 25-hydroxy-vitamin D concentrations in pregnant women. BMJ Group.

Dyfyniad Arddull Chicago

MacLennan, W. J., J. C. Hamilton, and J. M. Darmady. The Effects of Season and Stage of Pregnancy On Plasma 25-hydroxy-vitamin D Concentrations in Pregnant Women. BMJ Group, 1980.

Dyfyniad MLA

MacLennan, W. J., J. C. Hamilton, and J. M. Darmady. The Effects of Season and Stage of Pregnancy On Plasma 25-hydroxy-vitamin D Concentrations in Pregnant Women. BMJ Group, 1980.

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