contains or references some other bibliographic item which is related to the present one in some specified manner, for example as a constituent or alternative version of it. 구성물이나 대체 버전과 같이 현 항목과 특정 방식으로 관련된 다른 서지 항목을 명시적 방식에 따라 포함하거나 지시한다. 包含或參照到其他書目項目，該些項目與目前的書目項目在某種程度上相關，例如作為其組成或者替代項目。 当該内容と関連する書誌情報項目を示す，または参照する．例えば，構成要 素または他の版など． contient ou référe à un autre élément bibliographique ayant une relation quelconque avec l'objet décrit, par exemple comme faisant partie d'une version alternative de celui-ci, ou bien en étant une version alternative. contiene o si riferisce ad altra entità bibliografica legata alla presente tramite una relazione specificata quale, per esempio, versione costitutiva o alternativa contiene o refiere algún otro elemento bibliográfico que se relaciona con el actual de alguna manera, por ejemplo como un versión complementaria o alternativa de este. If the @target attribute on is used, the relatedItem element must be empty A relatedItem element should have either a 'target' attribute or a child element to indicate the related bibliographic item points to the related bibliographic element by means of an absolute or relative URI reference Shirley, James The gentlemen of Venice New York Readex Microprint 1953 1 microprint card, 23 x 15 cm. Three centuries of drama: English, 1642–1700 Shirley, James The gentlemen of Venice a tragi-comedie presented at the private house in Salisbury Court by Her Majesties servants London H. Moseley 1655 78 p.

If the target attribute is used to reference the related bibliographic item, the element should be empty.