Hassall, Graham (2006). "The Tuvalu General Election 2006". Democracy and Elections Project, Governance Program, University of the South Pacific. Archived from the original on 24 December 2020. Retrieved 11 April 2015.
"外交部對吐瓦魯前總理索法圖逝世表達深切哀悼". Ministry of Foreign Affairs, Republic of China (Taiwan) (in Chinese (Taiwan)). 21 December 2020. Archived from the original on 24 December 2020. Retrieved 22 December 2020.
"Tuvalu Peer Review Report"(PDF). Pacific Islands Forum Secretariat. 9 July 2011. Archived(PDF) from the original on 24 December 2020 – via tgpg-isb.org.
"外交部對吐瓦魯前總理索法圖逝世表達深切哀悼". Ministry of Foreign Affairs, Republic of China (Taiwan) (in Chinese (Taiwan)). 21 December 2020. Archived from the original on 24 December 2020. Retrieved 22 December 2020.
Hassall, Graham (2006). "The Tuvalu General Election 2006". Democracy and Elections Project, Governance Program, University of the South Pacific. Archived from the original on 24 December 2020. Retrieved 11 April 2015.
"Tuvalu Peer Review Report"(PDF). Pacific Islands Forum Secretariat. 9 July 2011. Archived(PDF) from the original on 24 December 2020 – via tgpg-isb.org.