Chamberlain, C. J. (1911). Root Tubercles of Cycads. Zenodo.
Cita Chicago (17th ed.)Chamberlain, Charles Joseph. Root Tubercles of Cycads. Zenodo, 1911.
Cita MLA (9th ed.)Chamberlain, Charles Joseph. Root Tubercles of Cycads. Zenodo, 1911.
Atenció: Aquestes cites poden no estar 100% correctes.