Memorandum Circular No. 508 from the Office of the President, Amending Its Memorandum Circular No. 493 dated August 31, 1971 re: Enjoining Observance by All Concerned of Certain Prohibited Acts in Connection with the Coming Elections
Republic Act No. 6388. Otherwise Known as "The Election Code of 1971", re: Prohibited Acts, Restrictions, Resolutions, Penalties and Remedies Relative to the Coming Elections