„National Measurement Regulations 1999 |”. Australian Government. 1999. Приступљено 2010-02-13. "Tonne" is listed under Schedule 1, Part 3 as a non-SI unit of measurement used with SI units of measurement.
„Canada Gazette”. Government of Canada. 1998—2007. Архивирано из оригинала 06. 07. 2011. г. Приступљено 2010-02-13. „The Corporation shall pay to producers selling and delivering wheat produced in the designated area to the Corporation the following sums certain per tonne basis...”
hanford.gov
"GlossaryАрхивирано на сајту Wayback Machine (14. март 2010)". (June 2000). Disposition of Surplus Hanford Site Uranium, Hanford Site, Richland, Washington. US Department of Energy.
NISTSpecial Publication 330, 2019 edition states "The name of the unit with symbol t and defined according to 1 t = 103 kg is called 'metric ton' rather than 'tonne.'".
„Canada Gazette”. Government of Canada. 1998—2007. Архивирано из оригинала 06. 07. 2011. г. Приступљено 2010-02-13. „The Corporation shall pay to producers selling and delivering wheat produced in the designated area to the Corporation the following sums certain per tonne basis...”
"GlossaryАрхивирано на сајту Wayback Machine (14. март 2010)". (June 2000). Disposition of Surplus Hanford Site Uranium, Hanford Site, Richland, Washington. US Department of Energy.