Direct, o. c. p. D. K. e. D. (1993). As aves. Verbo.
Chicago Style (17th ed.) CitationDirect, obra concebida por Dorling Kindersley e DK. As Aves. Verbo, 1993.
MLA (8th ed.) CitationDirect, obra concebida por Dorling Kindersley e DK. As Aves. Verbo, 1993.
Warning: These citations may not always be 100% accurate.