Karen Hartley; Chris MacRo. (1999). Snail (Bug Books Series) (Big.). Heinemann/Raintree.
Cita Chicago Style (17a ed.)Karen Hartley; Chris MacRo. Snail (Bug Books Series). Big. Heinemann/Raintree, 1999.
Cita MLA (9a ed.)Karen Hartley; Chris MacRo. Snail (Bug Books Series). Big. Heinemann/Raintree, 1999.
Precaución: Estas citas no son 100% exactas.