Cita APA

Nilsson, G. (1981). The bird business: A study of the commercial cage bird trade. Washington, D. C.: Animal Welfare Institute.

Citación estilo Chicago

Nilsson, Greta. The Bird Business: A Study of the Commercial Cage Bird Trade. Washington, D. C.: Animal Welfare Institute, 1981.

Cita MLA

Nilsson, Greta. The Bird Business: A Study of the Commercial Cage Bird Trade. Washington, D. C.: Animal Welfare Institute, 1981.