G. Campbell

A taxonomic revision of the genus Rafnia Thunb. (Fabaceae, Crotalarieae)

G. Campbell, 2012 .

Genetic variation in Haworthia pumila and H. herbacea

H. Bank, G. Campbell, van Wyk Ben-Erik, 1995 .

Inter-specific hybridization in the Genus Fagopyrum

G. Campbell, 1995 .