Hobbs, Joseph J. Problems in the harvest of edible birds' nests in Sarawak and Sabah, Malaysian Borneo. // Biodiversity and Conservation 13. 2004. DOI:10.1023/b:bioc.0000047905.79709.7f. с. 2209 – 2226. A few species of swift, the cave swifts, are renowned for building the saliva nests used to produce the unique texture of this soup.
Gausset, Quentin. Chronicle of a Foreseeable Tragedy: Birds' Nests Management in the Niah Caves (Sarawak) // Human Ecology 32. 2004. DOI:10.1023/b:huec.0000043517.23277.54. с. 487 – 506.
