Martin, B. (1987). World Birds. Guinness Superlatives Ltd.
Chicago-čujuhus (17. p.)Martin, Brian. World Birds. London: Guinness Superlatives Ltd, 1987.
MLA-čujuhus (9. p.)Martin, Brian. World Birds. Guinness Superlatives Ltd, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.