United States National Museum. (1942). The Late Cenozoic Vertebrate Faunas from the San Pedro Valley, Ariz. [s.n.].
Chicago Style (17th ed.) CitationUnited States National Museum. The Late Cenozoic Vertebrate Faunas from the San Pedro Valley, Ariz. [Washington]: [s.n.], 1942.
MLA (9th ed.) CitationUnited States National Museum. The Late Cenozoic Vertebrate Faunas from the San Pedro Valley, Ariz. [s.n.], 1942.
Warning: These citations may not always be 100% accurate.