Sarris, Jerome; Panossian, Alexander; Schweitzer, Isaac; Stough, Con; Scholey, Andrew (December 2011). "Herbal medicine for depression, anxiety and insomnia: A review of psychopharmacology and clinical evidence". European Neuropsychopharmacology. 21 (12): 841–860. doi:10.1016/j.euroneuro.2011.04.002. PMID21601431. S2CID16831869.
Sarris, Jerome; Panossian, Alexander; Schweitzer, Isaac; Stough, Con; Scholey, Andrew (December 2011). "Herbal medicine for depression, anxiety and insomnia: A review of psychopharmacology and clinical evidence". European Neuropsychopharmacology. 21 (12): 841–860. doi:10.1016/j.euroneuro.2011.04.002. PMID21601431. S2CID16831869.
Still, Shannon M.; Potter, Daniel (2013). "California Poppy Conundrums: Insights into Relationships within Tribe Eschscholtzieae (Papaveraceae)". Systematic Botany. 38 (1): 104–117. doi:10.1600/036364413X661872. JSTOR23362741. S2CID84687122.
Sarris, Jerome; Panossian, Alexander; Schweitzer, Isaac; Stough, Con; Scholey, Andrew (December 2011). "Herbal medicine for depression, anxiety and insomnia: A review of psychopharmacology and clinical evidence". European Neuropsychopharmacology. 21 (12): 841–860. doi:10.1016/j.euroneuro.2011.04.002. PMID21601431. S2CID16831869.
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Cook, Anjie J. (August 17, 2021). "A Profusion of Poppy Confusion". UC Davis Arboretum and Public Garden. Retrieved October 25, 2023.