Vaughn, P. P. (1966). Comparison of the Early Permian vertebrate faunas of the Four Corners region and North-Central Texas. Los Angeles County Museum of Natural History.
Chicago-Zitierstil (17. Ausg.)Vaughn, Peter Paul. Comparison of the Early Permian Vertebrate Faunas of the Four Corners Region and North-Central Texas. Los Angeles, Calif: Los Angeles County Museum of Natural History, 1966.
MLA-Zitierstil (9. Ausg.)Vaughn, Peter Paul. Comparison of the Early Permian Vertebrate Faunas of the Four Corners Region and North-Central Texas. Los Angeles County Museum of Natural History, 1966.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.