Cita APA (7a ed.)

Hansal and gretel(Graded reader level-3). Macaw Books.

Cita Chicago Style (17a ed.)

Hansal and Gretel(Graded Reader Level-3). 2010 2010: Macaw Books.

Cita MLA (9a ed.)

Hansal and Gretel(Graded Reader Level-3). Macaw Books.