Syd Hoff. (1997). "Happy Birthday, Danny and the Dinosaur! (I Can Read Level 1)" (Reprint.). HarperCollins.
Čikaški stil citiranja (17. izdanje)Syd Hoff. "Happy Birthday, Danny and the Dinosaur! (I Can Read Level 1)". Reprint. HarperCollins, 1997.
MLA način citiranja (9. izdanje)Syd Hoff. "Happy Birthday, Danny and the Dinosaur! (I Can Read Level 1)". Reprint. HarperCollins, 1997.
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