Thompson, S. A., Park, J. S., & Li, C. N. (2006). A reference grammar of Wappo. University of California Press.
Lua i Stíl Chicago (17ú heag.)Thompson, Sandra A., Joseph Sung-Yul Park, agus Charles N. Li. A Reference Grammar of Wappo. Berkeley: University of California Press, 2006.
Lua MLA (9ú heag.)Thompson, Sandra A., et al. A Reference Grammar of Wappo. University of California Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.