Cita APA (7a ed.)

Muir-Wood, H. M., & Cooper, A. (1951). A New Species of the Jurassic Brachiopod Genus Septirhynchia. Smithsonian Institution.

Cita Chicago Style (17a ed.)

Muir-Wood, Helen M., y Arthur Cooper. A New Species of the Jurassic Brachiopod Genus Septirhynchia. Washington, D.C: Smithsonian Institution, 1951.

Cita MLA (9a ed.)

Muir-Wood, Helen M., y Arthur Cooper. A New Species of the Jurassic Brachiopod Genus Septirhynchia. Smithsonian Institution, 1951.