APA

Williams P., Gibbons D., Margules C. R., Rebelo A. G., Humphries C. & Pressey R. L.Comparison of richness hotspots, rarity hotspots, and complementary areas for conserving diversity of british birds. : .

Chicago

Williams Paul, Gibbons David, Margules Chris R, Rebelo Anthony G, Humphries Chris and Pressey Robert L.Comparison of richness hotspots, rarity hotspots, and complementary areas for conserving diversity of british birds. : .

Harvard

Williams P., Gibbons D., Margules C. R., Rebelo A. G., Humphries C. and Pressey R. L.Comparison of richness hotspots, rarity hotspots, and complementary areas for conserving diversity of british birds. : .

MLA

Williams Paul, Gibbons David, Margules Chris R, Rebelo Anthony G, Humphries Chris and Pressey Robert L.: . .