APA (7th ed.) Zitazioa

Boutwell. John P. McGovern, MD. Texas A&M University Press.

Chicago Style (17th ed.) Zitazioa

Boutwell. John P. McGovern, MD. Texas A&M University Press.

MLA (9th ed.) Zitazioa

Boutwell. John P. McGovern, MD. Texas A&M University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.