Gaya APA

Birney, B, G., Burris, P. (2014). Humphrey's: Really wheely racing day . New York: Penguin Group - Puffin Books.

Gaya MLA

Birney, Betty, G.., Burris, Priscilla. "Humphrey's: Really wheely racing day". New York: Penguin Group - Puffin Books, 2014. Text / Book.