diff --git a/src/ifc4d/CITATION.cff b/src/ifc4d/CITATION.cff
new file mode 100644
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+++ b/src/ifc4d/CITATION.cff
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+# This CITATION.cff file was generated with cffinit.
+# Visit https://bit.ly/cffinit to generate yours today!
+
+cff-version: 1.2.0
+title: ifc4d
+message: >-
+  If you use this software, please cite it using the
+  metadata from this file.
+type: software
+authors:
+  - name: "IfcOpenShell contributors"
+repository-code: >-
+  https://github.com/IfcOpenShell/IfcOpenShell/tree/v0.7.0/src/ifc4d
+abstract: Convert to and from IFC and project management software
+keywords:
+  - IFC
+  - 4D
+license: LGPL-3.0-or-later