Abboud, T. K. (1988). Maternal and fetal beta endorphin: Effects of pregnancy and labour.
Chicago Style aipamenaAbboud, T K. Maternal and Fetal Beta Endorphin: Effects of Pregnancy and Labour. 1988.
MLA aipamenaAbboud, T K. Maternal and Fetal Beta Endorphin: Effects of Pregnancy and Labour. 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.