APA aipamena

Georgr Brown Tindall , D. E. S. America (brief fift edition.). W. W. Norton & Company.

Chicago Style aipamena

Georgr Brown Tindall , David Emory SHI. America. brief fift edition. W. W. Norton & Company.

MLA aipamena

Georgr Brown Tindall , David Emory SHI. America. brief fift edition. W. W. Norton & Company.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.