A systematic review of the genus P̲h̲y̲l̲l̲o̲s̲c̲o̲p̲u̲s̲ (willow-warblers or leaf-warblers) /
Ticehurst, Claud Buchanan.
A systematic review of the genus P̲h̲y̲l̲l̲o̲s̲c̲o̲p̲u̲s̲ (willow-warblers or leaf-warblers) / By Claud B. Ticehurst. - London : Printed by order of the Trustees of the British Museum, 1938. - viii, 192, [1] p. illus. (maps) II col. pl. 26 cm.
A systematic review of the genus P̲h̲y̲l̲l̲o̲s̲c̲o̲p̲u̲s̲ (willow-warblers or leaf-warblers) / By Claud B. Ticehurst. - London : Printed by order of the Trustees of the British Museum, 1938. - viii, 192, [1] p. illus. (maps) II col. pl. 26 cm.