only display authoritative source on concept page

_includes/localized-concept.html

@@ -3,6 +3,7 @@
 {%- assign term_status = english.entry_status -%}
 {%- assign classification = english.terms.first.normative_status -%}
 {%- assign english_authoritative_source = english.sources | get_authoritative -%}
+{%- assign english_authoritative_sources = english.sources | get_all_authoritative_sources -%}
 {%- assign localized_authoritative_source = localized_term.sources | get_authoritative -%}
 
 <article
@@ -114,7 +115,7 @@ <h3 class="warning">Translated term missing in this language.</h3>
     <p class="origin localized">
       {% if lang == "eng" %}
         [SOURCE:
-          {% for source in english.sources %}
+          {% for source in english_authoritative_sources %}
             {{ source | display_authoritative_source }}{% unless forloop.last %};{% endunless %}
           {%- endfor -%}
         ]

lib/jekyll/geolexica/filters.rb

@@ -204,6 +204,10 @@ def deprecated?(term)
       def get_authoritative(sources)
         sources&.find { |source| source["type"] == "authoritative" }
       end
+
+      def get_all_authoritative_sources(sources)
+        sources&.select { |source| source["type"] == "authoritative" }
+      end
     end
   end
 end

spec/unit/jekyll/geolexica/filters_spec.rb

@@ -184,6 +184,33 @@ def wrapper.escape_once(str); "!#{str}!"; end
     end
   end
 
+  describe "#get_all_authoritative_sources" do
+    subject { wrapper.method(:get_all_authoritative_sources) }
+
+    it "returns all authoritative sources if available in given sources" do
+      sources = [
+        { "type" => "authoritative" },
+        { "type" => "authoritative" },
+        { "type" => "authoritative" },
+        { "type" => "lineage" },
+      ]
+
+      expect(subject.call(sources)).to eq(sources[0..-2])
+    end
+
+    it "returns empty array if authoritative source is not in given sources" do
+      sources = [
+        { "type" => "lineage" },
+      ]
+
+      expect(subject.call(sources)).to eq([])
+    end
+
+    it "returns nil if given sources are nil" do
+      expect(subject.call(nil)).to eq(nil)
+    end
+  end
+
   describe "with term" do
     let(:term) do
       {