aoakah yang dimaksud dengan GMT?
Waktu Greenwich
Dumortier, J, Hannelore, D, & Loncke, M. (n.d.). . . Retrieved 8 July 2009.
Howse, D. (1997). Greenwich time and the longitude. London: Philip Wilson.
, R.S.C. 1985, c. I-21. (2005). CanLII. (Canadian statute)
. UK Law Statute Database. (UK statute)
. British and Irish Legal Information Institute. (Irish statute)
Myers, J. (2007).  Retrieved 4 January 2008.
Seago, J.H., & Seidelmann, P. K. (c. 2001). . Steve Allen of University of California Observatories. Retrieved 8 July 2009.
. BBC News. Retrieved 9 July 2009.
. Irish Statute Book. Office of the Attorney General. (Irish statute)
. British and Irish Legal Information Institute. (Irish statute)