Cita APA (7a ed.)

Cooper,J.E. (1989). Disease and threatened birds. International Council of Bird Preservation.

Cita Chicago Style (17a ed.)

Cooper,J.E. Disease and Threatened Birds. Cambridge - INGL: International Council of Bird Preservation, 1989.

Cita MLA (8a ed.)

Cooper,J.E. Disease and Threatened Birds. International Council of Bird Preservation, 1989.