Citazione Stile APA (7a Edizione)

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.

Citazione stile Chigago Style (17a edizione)

Monday, Jane Clements, e 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.

Citatione MLA (9a ed.)

Monday, Jane Clements, e Frances Brannen Vick. Petra's Legacy: The South Texas Ranching Empire of Petra Vela and Mifflin Kenedy. Texas A&M University Press, 2007.