BibTeX

@incollection{VanDeusen1972,
  author    = {Van Deusen, H. M.},
  booktitle = {Encyclopaedia of Papua and New Guinea},
  editor    = {Ryan, Peter},
  pages     = {711-714},
  title     = {Marsupials},
  url       = {https://archive.org/details/encyclopaediaofp0001unse},
  year      = {1972},
  sections  = {None}
}