APA (7th ed.) Zitazioa
Howland, J. Holt's Diseases of infancy and childhood.
Chicago Style (17th ed.) Zitazioa
Howland, John. Holt's Diseases of Infancy and Childhood.
MLA (9th ed.) Zitazioa
Howland, John. Holt's Diseases of Infancy and Childhood.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.