Fraga, R. M. (1996). Comentarios bibliográficos: (Johnsgard y Carbonell: Ruddy ducks and other stifftails: their behavior and biology, Gillham y Gillham: Hybrid ducks. A contribution towards an inventory).
Cita Chicago Style (17a ed.)Fraga, Rosendo M. Comentarios Bibliográficos: (Johnsgard Y Carbonell: Ruddy Ducks and Other Stifftails: Their Behavior and Biology, Gillham Y Gillham: Hybrid Ducks. A Contribution Towards an Inventory). 1996.
Cita MLA (8a ed.)Fraga, Rosendo M. Comentarios Bibliográficos: (Johnsgard Y Carbonell: Ruddy Ducks and Other Stifftails: Their Behavior and Biology, Gillham Y Gillham: Hybrid Ducks. A Contribution Towards an Inventory). 1996.
Precaución: Estas citas no son 100% exactas.