APA aipamena

Universal. (2024). Post Office Act, 1898. LexisNexis.

Chicago Style aipamena

Universal. Post Office Act, 1898. LexisNexis, 2024.

MLA aipamena

Universal. Post Office Act, 1898. LexisNexis, 2024.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.