Schaefer, J. R. (2021). On Dipsacus and Drosera: Francis Darwin's favorite carnivores. Zenodo.
Tohutoru Kātū Chicago (17th ed.)Schaefer, John R. On Dipsacus and Drosera: Francis Darwin's Favorite Carnivores. Zenodo, 2021.
Tohutoro MLA (9th ed.)Schaefer, John R. On Dipsacus and Drosera: Francis Darwin's Favorite Carnivores. Zenodo, 2021.
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