Chisholm, A. H. (1918). Birds and Caterpillars. Zenodo.
Cita Chicago (17th ed.)Chisholm, Alexander Hugh. Birds and Caterpillars. Zenodo, 1918.
Cita MLA (9th ed.)Chisholm, Alexander Hugh. Birds and Caterpillars. Zenodo, 1918.
Atenció: Aquestes cites poden no estar 100% correctes.