Worked on the cp2k/cp2k repository to deliver Spin-Flip TDDFT Bibliography Reference Support, introducing a new citation for SF-TDDFT within the bibliography module. The implementation involved updating Fortran code to ensure the citation was correctly recognized, linked, and displayed across all relevant features, enhancing traceability and reducing manual verification for users. The workflow demonstrated careful code propagation and robust version control using Git, with integration of Python modules to streamline citation management. This focused effort improved citation accuracy and discoverability for scientific computing users, leveraging skills in Fortran programming, numerical methods, and scientific software development without addressing bug fixes.