Toyne, E. P., & Ostroznik, H. (1997). Notes on Northern Goshawks nesting in an abandoned heronry in Wales. Zenodo.
Citazione stile Chigago Style (17a edizione)Toyne, E. P., e H. Ostroznik. Notes on Northern Goshawks Nesting in an Abandoned Heronry in Wales. Zenodo, 1997.
Citatione MLA (9a ed.)Toyne, E. P., e H. Ostroznik. Notes on Northern Goshawks Nesting in an Abandoned Heronry in Wales. Zenodo, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.