Kean, H. The moment of Greyfriars Bobby: The changing cultural position of animals, 1800-1920 / Hilda Kean. A cultural history of animals in the age of empire.(2007).

Kean, Hilda. "The Moment of Greyfriars Bobby: The Changing Cultural Position of Animals, 1800-1920 / Hilda Kean." A Cultural History of Animals in the Age of Empire.(2007) .

Kean, Hilda. "The Moment of Greyfriars Bobby: The Changing Cultural Position of Animals, 1800-1920 / Hilda Kean." A Cultural History of Animals in the Age of Empire.(2007), .