APA (7th ed.) Citation
Spoehr, H. A. (1919). The carbohydrate Economy of cacti.
Chicago Style (17th ed.) Citation
Spoehr, Herman Augustus. The Carbohydrate Economy of Cacti. Washington, 1919.
MLA (9th ed.) Citation
Spoehr, Herman Augustus. The Carbohydrate Economy of Cacti. 1919.
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