User:NikoPico/Pinus jeffreyi/Bibliography

Ritter, Matt. California Plants: A Guide to our Iconic Flora.


 * The author of this book has a Ph. D in plant biology, and is a reputable botany professor. He has published several other books and has contributed to several magazines as well.

Jenkinson, James L.. ''Pinus jeffreyi. Grev & Balf.''


 * Peer-reviewed article

Fire Effects Information System; Pinus jeffreyi.

Conkle, M. Thompson; Critchfield, William B.. Genetic Variation and Hybridization of Ponderosa Pine
 * USDA site


 * Peer-reviewed source