Pertubuhan Berita Nasional Malaysia. Tun Dr. Mahathir Mohamad: The 4th Prime Minister of Malaysia, 1981-2003.
Chicago-viite (17. p.)Pertubuhan Berita Nasional Malaysia. Tun Dr. Mahathir Mohamad: The 4th Prime Minister of Malaysia, 1981-2003.
MLA-viite (8. p.)Pertubuhan Berita Nasional Malaysia. Tun Dr. Mahathir Mohamad: The 4th Prime Minister of Malaysia, 1981-2003.
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