Cita APA

Campbell, B., & Lack, E. (1985). A dictionary of birds. England: The British Ornithoogists Union.

Citación estilo Chicago

Campbell, Bruce, y Elizabeth Lack. A Dictionary of Birds. England: The British Ornithoogists Union, 1985.

Cita MLA

Campbell, Bruce, y Elizabeth Lack. A Dictionary of Birds. England: The British Ornithoogists Union, 1985.