APA (7th ed.) Citation

Calkins, W. W. (1879). Tillandsias Under Cultivation. Zenodo.

Chicago Style (17th ed.) Citation

Calkins, William Wirt. Tillandsias Under Cultivation. Zenodo, 1879.

MLA (9th ed.) Citation

Calkins, William Wirt. Tillandsias Under Cultivation. Zenodo, 1879.

Warning: These citations may not always be 100% accurate.