@dataset{currentDoc,
  author = {},
  title = {Markham Ontario. 1:50,000. Map Sheet 030M14, ed. 9, 1994},
  publisher = {Other Borealis Collections},
  issued = {1994-01-01},
  howpublished = {{\url{https://doi.org/10.5683/SP3/RPZU89}}}
}