| Food, feeding habits and territory of the rock pipit Anthus spinoletta |  |
| Gibb, J. (1956). Food, feeding habits and territory of the rock pipit Anthus spinoletta Ibis 98(3): 506-530 |
| In: Ibis. British Ornithologists' Union/Wiley: London. ISSN 0019-1019, meer |
|
