Adding reference information to a skos:Concept

If I have a skos:Concept that represents some scientific term:

PREFIX ex: <http://a.example/ex1#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX desiredresource: <http://what.im.looking.for/>

ex:Chelation a skos:Concept ;
  skos:prefLabel "Chelation"@en ;
  skos:definition "a type of bonding of ions and molecules to metal ions."@en;
  desiredresource:reference "https://goldbook.iupac.org/terms/view/C01012" .

What is the recommended way to represent:

reference information (such as journal articles) from which the definition was obtained or derived.
Resources that provide more information for the reader.

So far I've considered:

dcat:source : as a 'reference' from which the definition was obtained

Solution

The elements of the SKOS vocabulary can be used in combination with other elements, such as elements of the Dublin Core. And you can use from dublin core terms references or relation

PREFIX ex: <http://a.example/ex1#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX dc: <http://purl.org/dc/terms/>
  ex:Chelation a skos:Concept ;
  skos:prefLabel "Chelation"@en ;
  skos:definition "a type of bonding of ions and molecules to metal ions."@en;
  dc:references "https://goldbook.iupac.org/terms/view/C01012" .

you can see details about dublin core elements here