Brown, A. D. R. (1971). A review of the butterflies in the Bristol area. Zenodo.
Cita Chicago (17th ed.)Brown, A. D. R. A Review of the Butterflies in the Bristol Area. Zenodo, 1971.
Cita MLA (9th ed.)Brown, A. D. R. A Review of the Butterflies in the Bristol Area. Zenodo, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.