Clement, Peter; Harris, Alan & Davies, John (1993) Finches and Sparrows: An Identification Guide, Christopher Helm, London. Sinclair, Ian & Ryan, Peter (2003)
Clement, Peter; Harris, Alan & Davies, John (1993) Finches and Sparrows: An Identification Guide, Christopher Helm, London. Sinclair, Ian & Ryan, Peter (2003)
Sinclair and Peter Ryan (2003) Struik ISBN 1-86872-857-9 引用错误:带有name属性“sinclair”的<ref>标签用不同内容定义了多次 Birds of Africa south of the Sahara, Ian Sinclair and