APA aipamena

Smithells, D. (1996). Vitamins in early pregnancy. BMJ Group.

Chicago Style aipamena

Smithells, D. Vitamins in Early Pregnancy. BMJ Group, 1996.

MLA aipamena

Smithells, D. Vitamins in Early Pregnancy. BMJ Group, 1996.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.