The royal letters of Baginda Omar Sultan Terengganu Darul Iman IX Marhum Baginda (1806-1876) - Raimy Che Ross (Kuala Terengganu Yayasan Diraja Sultan Mizan, 2015)
Keywords: Baginda Omar, Sultan Terengganu Darul Iman lX -- 1806-1876; Royal houses -- Terengganu -- 1806-1876; Sultans -- Malaysia -- Terengganu -- Correspondence; Malaysia -- Kings and rulers -- Biography; Terengganu -- History -- Sources -- 1806-1876