APA aipamena

(1961). Obituary: D. CALWELL, M.B., B.Ch.

Chicago Style aipamena

Obituary: D. CALWELL, M.B., B.Ch. 1961.

MLA aipamena

Obituary: D. CALWELL, M.B., B.Ch. 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.