Mathew Price. (2019). Diggers: Working Wheels. Mathew Price Ltd.
Chicago-čujuhus (17. p.)Mathew Price. Diggers: Working Wheels. Mathew Price Ltd, 2019.
MLA-čujuhus (9. p.)Mathew Price. Diggers: Working Wheels. Mathew Price Ltd, 2019.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.