The Cretaceous system of southeastern Arizona, in Heindl, L.A., ed., Southern Arizona Guidebook II, combined with the 2nd annual Arizona Geological Society Digest
Fergusson, W.B., 1959, The Cretaceous system of southeastern Arizona, in Heindl, L.A., ed., Southern Arizona Guidebook II, combined with the 2nd annual Arizona Geological Society Digest: Arizona Geological Society, p. 43-47.
