Hayes. Alligators of Texas. Texas A&M University Press.
Chicago Style (17th ed.) ZitazioaHayes. Alligators of Texas. Texas A&M University Press.
MLA (9th ed.) ZitazioaHayes. Alligators of Texas. Texas A&M University Press.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.