@misc{ wiki:xxx, title = "Diesel fuel --- {Wikipedia}", year = "2019", howpublished = {\url{https://en.wikipedia.org/wiki/Diesel\_fuel}}, note = "[Online; accessed 08-Jan-2019]" } @book { chembook, author = "{Taylor et. al.}", title = "Chemistry 2: VCE units 3\&4", year = "2017" }