Citazione Stile APA (7a Edizione)

NA. (1956). The relationship of Passer griseus (Vieillot) and Passer diffusus (Smith) with a description of a new race of the latter. Zenodo.

Citazione stile Chigago Style (17a edizione)

NA. The Relationship of Passer Griseus (Vieillot) and Passer Diffusus (Smith) with a Description of a New Race of the Latter. Zenodo, 1956.

Citatione MLA (9a ed.)

NA. The Relationship of Passer Griseus (Vieillot) and Passer Diffusus (Smith) with a Description of a New Race of the Latter. Zenodo, 1956.