Panganiban, M. G., Lastica-Ternura, E. A., & Flores, M. L. S. (2022). Anatomical light microscopic features of the down feathers of four species of cockatoos (Aves: Psittaciformes: Psittacidae). The Philippine Journal of Veterinary Medicine.
Cita Chicago (17th ed.)Panganiban, Marie-Louise G., Emilia A. Lastica-Ternura, i Marianne Leila S. Flores. "Anatomical Light Microscopic Features of the Down Feathers of Four Species of Cockatoos (Aves: Psittaciformes: Psittacidae)." The Philippine Journal of Veterinary Medicine 2022.
Cita MLA (9th ed.)Panganiban, Marie-Louise G., et al. "Anatomical Light Microscopic Features of the Down Feathers of Four Species of Cockatoos (Aves: Psittaciformes: Psittacidae)." The Philippine Journal of Veterinary Medicine, 2022.