SHEA MICHAEL. (1988). INFLUENCE: HOW TO MAKE THE SYSTEM WORK FOR YOU. SPHERE BOOKS LTD.
Chicago-čujuhus (17. p.)SHEA MICHAEL. INFLUENCE: HOW TO MAKE THE SYSTEM WORK FOR YOU. LONDON: SPHERE BOOKS LTD, 1988.
MLA-čujuhus (9. p.)SHEA MICHAEL. INFLUENCE: HOW TO MAKE THE SYSTEM WORK FOR YOU. SPHERE BOOKS LTD, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.