Optare Sigma (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Optare Sigma" in English language version.

refsWebsite

Global rank English rank

6^th place

archive.org (Global: 6^th place; English: 6^th place)

Cole, Martin (15 April 1994). "Vehicle launch: Optare Sigma Dennis Lance". Bus & Coach Buyer. No. 251. Spalding. p. 40. Retrieved 27 July 2024.
Jarosz, Andrew (20 August 1994). "GAG and OK signal Auckland war end". Coach & Bus Week. No. 130. Peterborough: Emap. p. 4. Retrieved 27 July 2024.
"First Lances". Coach & Bus Week. No. 109. Peterborough: Emap. 26 March 1994. p. 11. Retrieved 27 July 2024.