Cita APA

Xu, G., & Grant, R. E. (1994). Brachiopods near the permian-triassic boundary in South China. Washington: Smithsonian Institution Press.

Citación estilo Chicago

Xu, Guirong, y Richard E. Grant. Brachiopods Near the Permian-triassic Boundary in South China. Washington: Smithsonian Institution Press, 1994.

Cita MLA

Xu, Guirong, y Richard E. Grant. Brachiopods Near the Permian-triassic Boundary in South China. Washington: Smithsonian Institution Press, 1994.