Nolet, B. A. (1994). Return of the beaver to the Netherlands: Viability and prospects of a re-introduced population. Rijksuniversiteit te Groningen.
Lua i Stíl Chicago (17ú heag.)Nolet, Bartholomeus Andreas. Return of the Beaver to the Netherlands: Viability and Prospects of a Re-introduced Population. Netherlands: Rijksuniversiteit te Groningen, 1994.
Lua MLA (8ú heag.)Nolet, Bartholomeus Andreas. Return of the Beaver to the Netherlands: Viability and Prospects of a Re-introduced Population. Rijksuniversiteit te Groningen, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.