ebrary, Inc, & Perttula, T. K. (2004). The prehistory of Texas. Texas A&M University Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Timothy K. Perttula. The Prehistory of Texas. College Station: Texas A&M University Press, 2004.
Lua MLA (9ú heag.)ebrary, Inc, agus Timothy K. Perttula. The Prehistory of Texas. Texas A&M University Press, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.