Gibson, G. (1982). Perpetual Motion. McClelland and Steward Limited.
Chicago-čujuhus (17. p.)Gibson, Graeme. Perpetual Motion. Toronto, Canadá: McClelland and Steward Limited, 1982.
MLA-čujuhus (9. p.)Gibson, Graeme. Perpetual Motion. McClelland and Steward Limited, 1982.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.