Masello, J. F., Pagnossin, M. L., Sommer, C., & Quillfeldt, P. (2006). Population size, provisioning frequency, flock size and foraging range at the largest known colony of Psittaciformes: The Burrowing Parrots of the north-eastern Patagonian coastal cliffs.
Cita Chicago Style (17a ed.)Masello, Juan F., María Luján Pagnossin, Christina Sommer, y Petra Quillfeldt. Population Size, Provisioning Frequency, Flock Size and Foraging Range at the Largest Known Colony of Psittaciformes: The Burrowing Parrots of the North-eastern Patagonian Coastal Cliffs. 2006.
Cita MLA (8a ed.)Masello, Juan F., et al. Population Size, Provisioning Frequency, Flock Size and Foraging Range at the Largest Known Colony of Psittaciformes: The Burrowing Parrots of the North-eastern Patagonian Coastal Cliffs. 2006.