Lu, N. (2004). Unsaturated soil mechanics. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Lu, Ning. Unsaturated Soil Mechanics. John Wiley & Sons, 2004.
Lua MLA (8ú heag.)Lu, Ning. Unsaturated Soil Mechanics. John Wiley & Sons, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.