Cita APA (7th ed.)

Hoban, T. (1999). Let's count. Greenwillow Books.

Cita Chicago (17th ed.)

Hoban, Tana. Let's Count. New York: Greenwillow Books, 1999.

Cita MLA (8th ed.)

Hoban, Tana. Let's Count. Greenwillow Books, 1999.