Mass, W. (2013). Pi in the sky. New York : Little, Brown and Company.
Chicago-čujuhus (17. p.)Mass, Wendy. Pi in the Sky. New York : Little, Brown and Company, 2013.
MLA-čujuhus (9. p.)Mass, Wendy. Pi in the Sky. New York : Little, Brown and Company, 2013.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.