Frost, C. (1920). Popular and Practical Entomology. A Day's Beating. Zenodo.
Cita Chicago (17th ed.)Frost, C. Popular and Practical Entomology. A Day's Beating. Zenodo, 1920.
Cita MLA (9th ed.)Frost, C. Popular and Practical Entomology. A Day's Beating. Zenodo, 1920.
Atenció: Aquestes cites poden no estar 100% correctes.