APA aipamena

Brusentsev. Disasters in the United States. W.E. Upjohn Institute.

Chicago Style aipamena

Brusentsev. Disasters in the United States. W.E. Upjohn Institute.

MLA aipamena

Brusentsev. Disasters in the United States. W.E. Upjohn Institute.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.