APA

Homberger D. G., . (1986). The lingual apparatus of the African grey parrot, psittacus erithacus linné (aves: psittacidae): description and theoretical mechanical analysis. Washington, DC: The American Ornithologists' Union.

Chicago

Homberger Dominique G, . 1986. The lingual apparatus of the African grey parrot, psittacus erithacus linné (aves: psittacidae): description and theoretical mechanical analysis. Washington, DC: The American Ornithologists' Union.

Harvard

Homberger D. G., . (1986). The lingual apparatus of the African grey parrot, psittacus erithacus linné (aves: psittacidae): description and theoretical mechanical analysis. Washington, DC: The American Ornithologists' Union.

MLA

Homberger Dominique G, . The lingual apparatus of the African grey parrot, psittacus erithacus linné (aves: psittacidae): description and theoretical mechanical analysis. Washington, DC: The American Ornithologists' Union. 1986.