(1940). Sr. Edward Blackwell, August 1940.
Chicago Style aipamenaSr. Edward Blackwell, August 1940. 1940.
MLA aipamenaSr. Edward Blackwell, August 1940. 1940.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(1940). Sr. Edward Blackwell, August 1940.
Chicago Style aipamenaSr. Edward Blackwell, August 1940. 1940.
MLA aipamenaSr. Edward Blackwell, August 1940. 1940.