Talbot-Ponsonby, S. (1999). Two feet, four paws: The girl who walked her dog 4,500 miles. Summersdale.
Chicago-viite (17. p.)Talbot-Ponsonby, Spud. Two Feet, Four Paws: The Girl Who Walked Her Dog 4,500 Miles. Chichester: Summersdale, 1999.
MLA-viite (9. p.)Talbot-Ponsonby, Spud. Two Feet, Four Paws: The Girl Who Walked Her Dog 4,500 Miles. Summersdale, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.