1. Sexual and nucellar embryony in F1 hybrids and advanced crosses of Citrus and Poncirus;Cameron;J. Am. Soc. Hortic. Sci.,1979
2. Genetics and nucellar embryony;Cameron,1968
3. Identical twin hybrids of Citrus × Poncirus from strictly sexual seed parents;Cameron;Am. J. Bot.,1968
4. A review of citrus seed biology and its relationship to nursery practices;Castle,1981
5. Citrus rootstocks;Castle,1987