Q. I need help finding and citing a tertiary source on ginkgo biloba.
Answer
Here are some of links you might find helpful.
The Review of Natural Products:
Review of Natural Products entry on ginkgo biloba
https://fco-factsandcomparisons-com.db.usciences.edu/lco/action/doc/retrieve/docid/fc_rnp2/3750163
From the Citing Medicine Guide, to help you cite your source:
http://www.ncbi.nlm.nih.gov/books/NBK7269/#A53757
Please let us know if you need any more help.