Syd Hoff. (1997). "Happy Birthday, Danny and the Dinosaur! (I Can Read Level 1)" (Reprint.). HarperCollins.
Chicago-viite (17. p.)Syd Hoff. "Happy Birthday, Danny and the Dinosaur! (I Can Read Level 1)". Reprint. HarperCollins, 1997.
MLA-viite (9. p.)Syd Hoff. "Happy Birthday, Danny and the Dinosaur! (I Can Read Level 1)". Reprint. HarperCollins, 1997.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.