APA aipamena

Z�llner, D. (1973). Labour and Social security. Bonn : Press and Information Office.

Chicago Style aipamena

Z�llner, Detlev(Comp.). Labour and Social Security. Bonn : Press and Information Office, 1973.

MLA aipamena

Z�llner, Detlev(Comp.). Labour and Social Security. Bonn : Press and Information Office, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.