Monday, J. C., & Vick, F. B. (2007). Petra's legacy: The South Texas ranching empire of Petra Vela and Mifflin Kenedy. Texas A&M University Press.
Lua i Stíl Chicago (17ú heag.)Monday, Jane Clements, agus Frances Brannen Vick. Petra's Legacy: The South Texas Ranching Empire of Petra Vela and Mifflin Kenedy. College Station: Texas A&M University Press, 2007.
Lua MLA (9ú heag.)Monday, Jane Clements, agus Frances Brannen Vick. Petra's Legacy: The South Texas Ranching Empire of Petra Vela and Mifflin Kenedy. Texas A&M University Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.