Jan Berenstain; Stan Berenstain. (2006). The Berenstain Bears Down on the Farm (I Can Read Level 1). HarperCollins.
Cita Chicago Style (17a ed.)Jan Berenstain; Stan Berenstain. The Berenstain Bears Down on the Farm (I Can Read Level 1). HarperCollins, 2006.
Cita MLA (9a ed.)Jan Berenstain; Stan Berenstain. The Berenstain Bears Down on the Farm (I Can Read Level 1). HarperCollins, 2006.
Precaución: Estas citas no son 100% exactas.