Sinclair, I and P Ryan. 2010. Birds of Africa South of the Sahara. Second Edition. Struik Nature, (an imprint of Random House Struik (Pty) Ltd. ISBN 978-1770076235
Sinclair, I and P Ryan. 2010. Birds of Africa South of the Sahara. Second Edition. Struik Nature, (an imprint of Random House Struik (Pty) Ltd. ISBN 978-1770076235