Cita APA (7a ed.)

PARRAGON BOOKS. MY FIRST COUNTING BOOK. PARRAGON PUBL.

Cita Chicago Style (17a ed.)

PARRAGON BOOKS. MY FIRST COUNTING BOOK. PARRAGON PUBL.

Cita MLA (9a ed.)

PARRAGON BOOKS. MY FIRST COUNTING BOOK. PARRAGON PUBL.