Não informado. (1924). Contributions from the Museum of Geology of the University of Michigan. University of Michigan, Museum of Geology.
Chicago-viite (17. p.)Não informado. Contributions from the Museum of Geology of the University of Michigan. Ann Arbor, Mich: University of Michigan, Museum of Geology, 1924.
MLA-viite (8. p.)Não informado. Contributions from the Museum of Geology of the University of Michigan. University of Michigan, Museum of Geology, 1924.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.