Cita APA

Dall, W. H., & MacDonald, D. (1912). New species of fossil shells from Panamá and Costa Rica collected by D.F. MacDonald. Washington: Smithsonian Institution.

Citación estilo Chicago

Dall, William Healey, y D.F MacDonald. New Species of Fossil Shells From Panamá and Costa Rica Collected By D.F. MacDonald. Washington: Smithsonian Institution, 1912.

Cita MLA

Dall, William Healey, y D.F MacDonald. New Species of Fossil Shells From Panamá and Costa Rica Collected By D.F. MacDonald. Washington: Smithsonian Institution, 1912.