D.M., E., H.W., P., & V., A. (1994). Early seed plants in the Southern Hemisphere: I. Associated ovulate and microsporangiate organs from the carboniferous of Peru.
Citación estilo ChicagoD.M., Erwin, Pfefferkorn H.W., y Alleman V. Early Seed Plants in the Southern Hemisphere: I. Associated Ovulate and Microsporangiate Organs From the Carboniferous of Peru. 1994.
Cita MLAD.M., Erwin, Pfefferkorn H.W., y Alleman V. Early Seed Plants in the Southern Hemisphere: I. Associated Ovulate and Microsporangiate Organs From the Carboniferous of Peru. 1994.
Precaución: Estas citas no son 100% exactas.