APA način citiranja (7. izdanje)

(1981). 1981 constitutional amendments. U.P. Law Center.

Čikaški stil citiranja (17. izdanje)

1981 Constitutional Amendments. Quezon City: U.P. Law Center, 1981.

MLA način citiranja (9. izdanje)

1981 Constitutional Amendments. U.P. Law Center, 1981.