Pumain, D. (2006). Hierarchy in Natural and Social Sciences. Springer Netherlands. https://doi.org/10.1007/1-4020-4127-6
Lua i Stíl Chicago (17ú heag.)Pumain, Denise. Hierarchy in Natural and Social Sciences. Dordrecht: Springer Netherlands, 2006. https://doi.org/10.1007/1-4020-4127-6.
Lua MLA (9ú heag.)Pumain, Denise. Hierarchy in Natural and Social Sciences. Springer Netherlands, 2006. https://doi.org/10.1007/1-4020-4127-6.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.