Library, 1. L. I. I. Surveying: Theory and practice. Philadelphia, Pa. : Lefax.
Chicago-čujuhus (17. p.)Library, 11674 Lefax Instant Information. Surveying: Theory and Practice. Philadelphia, Pa. : Lefax.
MLA-čujuhus (9. p.)Library, 11674 Lefax Instant Information. Surveying: Theory and Practice. Philadelphia, Pa. : Lefax.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.