APA Citation

Sparks, J., Gillmor, R., & Soper, T. (1990). Parrots: A natural history. Londres: David & Charles.

Chicago Style Citation

Sparks, John, Robert Gillmor, and Tony Soper. Parrots: A Natural History. Londres: David & Charles, 1990.

MLA Citation

Sparks, John, Robert Gillmor, and Tony Soper. Parrots: A Natural History. Londres: David & Charles, 1990.

Warning: These citations may not always be 100% accurate.