1. Association of Official Seed Analysts(2019) AOSA Rules for seed testing—principles and procedures.https://www.analyzeseeds.com/product/aosa-rules-volume-1-principles-procedures-2019/
2. Baskin CC Baskin JM (2014) Seeds. Ecology biogeography and evolution of dormancy and germination. Second ed. Elsevier Inc.
3. Generalized provisional seed zones for native plants
4. Bureau of Land Management(2018) Seeds of success. Technical protocol for the collection study and conservation of seeds from native plant species https://www.blm.gov/sites/blm.gov/files/uploads/SOS%20Protocol%206.20.18.pdf
5. Foreword: International Standards for Native Seeds in Ecological Restoration