APA (7th ed.) Citation

Madsen, J., Tucker, G. M., Heath, M. F., Tomialojc, L., & Grimmett, R. F. A. (1994). Barnacle Goose (Branta leucopsis). Birdlife International.

Chicago Style (17th ed.) Citation

Madsen, J., G. M. Tucker, M. F. Heath, L. Tomialojc, and R. F. A. Grimmett. Barnacle Goose (Branta Leucopsis). Birdlife International, 1994.

MLA (8th ed.) Citation

Madsen, J., et al. Barnacle Goose (Branta Leucopsis). Birdlife International, 1994.