This code system http://hl7.org/fhir/contributor-summary-source defines the following codes:

CodeDisplayDefinition
publisher-data Publisher providedData copied by machine from publisher data.
article-copy Copied from articleData copied by human from article text.
citation-manager Reported by citation managerData copied by machine from citation manager data.
custom custom formatCustom format (may be described in text note).
<status value="active"/><experimental value="false"/><date value="2020-12-28T16:55:11+11:00"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><description value="Used to code the producer or rule for creating the display string."/><jurisdiction><coding><system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/><code value="001"/><display value="World"/></coding></jurisdiction><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/contributor-summary-source"/><content value="complete"/><concept><code value="publisher-data"/><display value="Publisher provided"/><definition value="Data copied by machine from publisher data."/></concept><concept><code value="article-copy"/><display value="Copied from article"/><definition value="Data copied by human from article text."/></concept><concept><code value="citation-manager"/><display value="Reported by citation manager"/><definition value="Data copied by machine from citation manager data."/></concept><concept><code value="custom"/><display value="custom format"/><definition value="Custom format (may be described in text note)."/></concept></CodeSystem>