JOHNSTON-GONZALEZ, Richard; EUSSE-GONZALEZ, Diana  y  VALENCIA-MARTINEZ, Natasha. Distribution and abundance of shorebirds in tidal flats of Sanquianga National Natural Park and the mouth of Iscuandé, Nariño (Colombia), between 2009 and 2020. Bol. Invest. Mar. Cost. [online]. 2020, vol.49, suppl.1, pp.73-94.  Epub 04-Sep-2021. ISSN 0122-9761.