References​

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• Ali, Abdullah, Malaysian Protocol and Correct Forms of Address, published by Times Books International, 1986, ISBN 9971653702

• Cheong, Mei Sui, Information Malaysia: 1985 Year Book,published by Berita Publishing, 1985

• De Ledesma, Charles; Lewis, Mark; Savage, Pauline, Malaysia, Singapore and Brunei, published by Rough Guides, 2003, ISBN 1843530945

• Karim, Gulrose; Tate, Desmond Muzaffar, Information Malaysia, published by Berita Publ. Sdn. Bhd., 1989

• Kershaw, Roger, Monarchy in South-East Asia: The Faces of Tradition in Transition, published by Routledge, 2001, ISBN 0415185319

• Morais, John Victor, The Who's who in Malaysia, published by Solai Press., 1967

• Morris, Ira J., My East was Gorgeous, by Ira J. Morris, published by Travel Book Club, 1958

• Nadarajah, K. N, Tengku Ahmad Rithauddeen: His Story, Pelanduk Publications, 2000, ISBN 9679787095

• Nadarajah, Nesalamar, Johore and the Origins of British Control, 1895-1914, published by Arenabuku, 2000, ISBN 9679703185

• Rahman, Abdul; Solomon, J. S., Challenging Times, published by Pelanduk Publications, 1985, ISBN 9679780945

• The International Who's Who 2004: Book with Single-User Online Access, by Elizabeth Sleeman, published by Europa Publications, Published by Routledge, 2003, ISBN 1857432177

• Towards Relevant Education: A General Sourcebook for Teachers, published by Education Forum (Philippines), Alternative Instructional Materials Project, Education Forum, 1986, ISBN 9719100605

• http://kesultananjohor.blogspot.my/2011/11/sejarah-adat-istiadat-diraja-johor.html 

• http://kesultananjohor.blogspot.my/2014/03/adat-istiadat-kesultanan-johor-moden.html