Lobel, A. (2011). Frog and toad together: I can read level 2. HarperCollins.
Cita Chicago Style (17a ed.)Lobel, Arnold. Frog and Toad Together: I Can Read Level 2. New York: HarperCollins, 2011.
Cita MLA (8a ed.)Lobel, Arnold. Frog and Toad Together: I Can Read Level 2. HarperCollins, 2011.
Precaución: Estas citas no son 100% exactas.