Tetley, L., & Calcutt, D. (1991). Electronic aids to navigation: Position fixing. London : Edward Arnold.
Chicago-čujuhus (17. p.)Tetley, L., juo David Calcutt. Electronic Aids to Navigation: Position Fixing. London : Edward Arnold, 1991.
MLA-čujuhus (9. p.)Tetley, L., juo David Calcutt. Electronic Aids to Navigation: Position Fixing. London : Edward Arnold, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.