chem / energy-sources.bibon commit finish energy source tables (4df0947)
   1@misc{ wiki:xxx,
   2    title = "Diesel fuel --- {Wikipedia}",
   3    year = "2019",
   4    howpublished = {\url{https://en.wikipedia.org/wiki/Diesel\_fuel}},
   5    note = "[Online; accessed 08-Jan-2019]"
   6}
   7
   8@book { chembook,
   9  author = "{Taylor et. al.}",
  10  title = "Chemistry 2: VCE units 3\&4",
  11  year = "2017"
  12}