Cita APA (7a ed.)

Butts, D., & Hunt, P. (2013). Did Beatrix Potter really have flu? The Lutterworth Press.

Cita Chicago Style (17a ed.)

Butts, Dennis, y Peter Hunt. Did Beatrix Potter Really Have Flu? Cambridge: The Lutterworth Press, 2013.

Cita MLA (8a ed.)

Butts, Dennis, y Peter Hunt. Did Beatrix Potter Really Have Flu? The Lutterworth Press, 2013.