Smith, W. W. (1926). Form and Coloration of House Sparrows' Eggs. Zenodo.
Citazione stile Chigago Style (17a edizione)Smith, W. W. Form and Coloration of House Sparrows' Eggs. Zenodo, 1926.
Citatione MLA (9a ed.)Smith, W. W. Form and Coloration of House Sparrows' Eggs. Zenodo, 1926.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.