Wendy Wax. (2007). Piggley Makes a Friend (Ready-to-Read. Level 1). Simon Spotlight.
Chicago-čujuhus (17. p.)Wendy Wax. Piggley Makes a Friend (Ready-to-Read. Level 1). Simon Spotlight, 2007.
MLA-čujuhus (9. p.)Wendy Wax. Piggley Makes a Friend (Ready-to-Read. Level 1). Simon Spotlight, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.