Wiegand, G. E. (1985). Cretaceous nannofossils from the Northwest African Margin. PANGAEA.
Cita Chicago Style (17a ed.)Wiegand, George E. Cretaceous Nannofossils from the Northwest African Margin. PANGAEA, 1985.
Cita MLA (9a ed.)Wiegand, George E. Cretaceous Nannofossils from the Northwest African Margin. PANGAEA, 1985.
Precaución: Estas citas no son 100% exactas.