Grant, J. A., Steiner, E. M., & Johnson, R. H. (1991). Treatment of persistent hiccups.
Chicago Style aipamenaGrant, J A., E M. Steiner, and R H. Johnson. Treatment of Persistent Hiccups. 1991.
MLA aipamenaGrant, J A., E M. Steiner, and R H. Johnson. Treatment of Persistent Hiccups. 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.