James & Meliame's Tongasite - This site is primarily in Tongan. - http://freepages.genealogy.rootsweb.com/~jamel/
Comparitive Syntax of Fijian and Tongan - Research on how a Proto-Central Pacific evolved from an ergative actancy system into modern Fijian which has an accusative one. Comparison is made with Tongan which retains an ergative system. - http://www3.aa.tufs.ac.jp/~ritsuko/papers/8ical_97pr.doc
Evidence for Grammatical Functions in Tongan - A review of open issues in the grammar on Tongan in light of recent developments in grammatical theory and the analysis of Western-Malayo-Polynesian languages. - http://www.sultry.arts.usyd.edu.au/LFG98/austro/download/dukes.rtf
Morphosyntax of 2P Pronouns in Tongan - Paper by Michael Dukes of the University of Canterbury and Stanford University examining 'second position' or 'Wackernagel' elements and their functional properties in Tongan. - http://csli-publications.stanford.edu/HPSG/1/hpsg00dukes.pdf