Svensson, Lars. (1999). Collins bird guide. Zetterström, Dan., Mullarney, Killian., Grant, P. J. (Peter James), 1943-. London: HarperCollins. ISBN0-00-219728-6. OCLC40754502. Archived from the original on 15 June 2020. Retrieved 2 August 2020.
worldcat.org
worldcat.org
Svensson, Lars. (1999). Collins bird guide. Zetterström, Dan., Mullarney, Killian., Grant, P. J. (Peter James), 1943-. London: HarperCollins. ISBN0-00-219728-6. OCLC40754502. Archived from the original on 15 June 2020. Retrieved 2 August 2020.
search.worldcat.org
Svensson, Lars. (1999). Collins bird guide. Zetterström, Dan., Mullarney, Killian., Grant, P. J. (Peter James), 1943-. London: HarperCollins. ISBN0-00-219728-6. OCLC40754502. Archived from the original on 15 June 2020. Retrieved 2 August 2020.