APA-čujuhus (7. p.)
Billings, J. D. (2001). Hardtack and coffee. Digital Scanning.
Chicago-čujuhus (17. p.)
Billings, John Davis. Hardtack and Coffee. Scituate, Mass.: Digital Scanning, 2001.
MLA-čujuhus (9. p.)
Billings, John Davis. Hardtack and Coffee. Digital Scanning, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.