Charra, M., & Sarasa, M. Applying IUCN Red List criteria to birds at different geographical scales: Similarities and differences. Museu de Ciències Naturals de Barcelona.
Chicago Style (17th ed.) CitationCharra, M., and M. Sarasa. Applying IUCN Red List Criteria to Birds at Different Geographical Scales: Similarities and Differences. Museu de Ciències Naturals de Barcelona.
MLA (9th ed.) CitationCharra, M., and M. Sarasa. Applying IUCN Red List Criteria to Birds at Different Geographical Scales: Similarities and Differences. Museu de Ciències Naturals de Barcelona.
Warning: These citations may not always be 100% accurate.