Copeland, E. B. (1898). A Biological Note on the Size of Evergreen Needles. Zenodo.
Cita Chicago (17th ed.)Copeland, Edwin Bingham. A Biological Note on the Size of Evergreen Needles. Zenodo, 1898.
Cita MLA (9th ed.)Copeland, Edwin Bingham. A Biological Note on the Size of Evergreen Needles. Zenodo, 1898.
Atenció: Aquestes cites poden no estar 100% correctes.