APA aipamena

Schwegmann, G. A. (1957). Union Catalogues; Their Problems and Organization.

Chicago Style aipamena

Schwegmann, George A. Union Catalogues; Their Problems and Organization. 1957.

MLA aipamena

Schwegmann, George A. Union Catalogues; Their Problems and Organization. 1957.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.