(1963). The world book encyclopedia. Vol.3 (C). Chicago: Field Enterprises Educational Corporation.
Chicago Style aipamenaThe World Book Encyclopedia. Vol.3 (C). Chicago: Field Enterprises Educational Corporation, 1963.
MLA aipamenaThe World Book Encyclopedia. Vol.3 (C). Chicago: Field Enterprises Educational Corporation, 1963.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.