"The Official Languages (Use for Official Purpose of the Union) - Rules 1976 (As Amended, 1987) - Paragraph 3(1)".
اطلع عليه بتاريخ 10 يونيو 2015.  "The Official Languages (Use for Official Purpose of the Union) - Rules 1976 (As Amended, 1987) - Paragraph 3(1)".