<ref name="Thrower_&_Bradbury_1977">{{cite book |first1=N. J. W. |last1=Thrower |first2=D. E. |last2=Bradbury |year=1977 |title=Chile-California mediterranean scrub atlas. US/IBP synthesis series 2 |url= |location=Stroudsburg, Pennsylvania |publisher=Dowden, Hutchinson & Ross, Inc. |pages=xv + 237 pp. |isbn=}}</ref>