APA aipamena

Brogan , D. W. U.S.A: An outline of the country, its people and institutions.

Chicago Style aipamena

Brogan , D. W. U.S.A: An Outline of the Country, Its People and Institutions.

MLA aipamena

Brogan , D. W. U.S.A: An Outline of the Country, Its People and Institutions.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.