Perrins, C., Cameron, A., & Hutchinson, P. (1984). Bird life: An introduction to the world of birds. Peerage.
Chicago-čujuhus (17. p.)Perrins, Christopher, Ad Cameron, juo Peter Hutchinson. Bird Life: An Introduction to the World of Birds. London: Peerage, 1984.
MLA-čujuhus (9. p.)Perrins, Christopher, et al. Bird Life: An Introduction to the World of Birds. Peerage, 1984.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.