APA aipamena

Thomas-Bilstein, J., & Busquets, i. C. (1997). <O >pássaro azul. Porto Editora.

Chicago Style aipamena

Thomas-Bilstein, J., and il. C. Busquets. <O >pássaro Azul. Porto Editora, 1997.

MLA aipamena

Thomas-Bilstein, J., and il. C. Busquets. <O >pássaro Azul. Porto Editora, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.