Analysis of information sources in references of the Wikipedia article "Sempadan Malaysia–Filipina" in Malay language version.
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(bantuan)Any ambiguity was settled in 1903, when Sultan Jamalul Kiram II signed a document known as the "Confirmation of cession of certain islands", under which he ceded to the British North Borneo Company additional islands in the vicinity of the mainland of North Borneo from Banggi Island to Sibuku Bay.
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(bantuan)|journal=
(bantuan)