Cita APA (7th ed.)

Rothfels, N. How the caged bird sings: Animals and entertainment / Nigel Rothfels. A cultural history of animals in the age of empire.(2007).

Cita Chicago (17th ed.)

Rothfels, Nigel. "How the Caged Bird Sings: Animals and Entertainment / Nigel Rothfels." A Cultural History of Animals in the Age of Empire.(2007) .

Cita MLA (8th ed.)

Rothfels, Nigel. "How the Caged Bird Sings: Animals and Entertainment / Nigel Rothfels." A Cultural History of Animals in the Age of Empire.(2007), .