@book{15,
  author = {Pocock Michael J. O. and Chapman D.S. and Sheppard L.J. and Roy Helen E.},
  title = {Choosing and using citizen science: a guide to when and how to use citizen science to monitor biodiversity and the environment},
  year = {2014},
  publisher = {NERC/Centre for Ecology & Hydrology},
  address = {Wallingford},
  issn = { 978-1-906698-50-8},
  language = {eng},
}