Harland, N. (2023). Birds of Sutton Grange February 2022. Zenodo.
Cita Chicago (17th ed.)Harland, Nigel. Birds of Sutton Grange February 2022. Zenodo, 2023.
Cita MLA (9th ed.)Harland, Nigel. Birds of Sutton Grange February 2022. Zenodo, 2023.
Atenció: Aquestes cites poden no estar 100% correctes.