On 24/05/2013,
you requested for the version in force on 24/05/2013
incorporating all amendments published on or before 24/05/2013.
The closest version currently available is that of 02/01/2011.
17. If in any proceedings under this Act or with reference to anything done or proposed to be done under this Act, any question arises whether any person is a citizen of Singapore or an exempted person, the onus of proving that he is a citizen of Singapore or an exempted person lies upon that person.