Parkinson, C. N. 109 Ways of getting to the top. Vision Books.
Chicago-čujuhus (17. p.)Parkinson, C. Northcote. 109 Ways of Getting to the Top. Vision Books.
MLA-čujuhus (9. p.)Parkinson, C. Northcote. 109 Ways of Getting to the Top. Vision Books.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.