RIES AL. (1990). BOTTOM UP MARKETING. PLUME BOOK.
Chicago-čujuhus (17. p.)RIES AL. BOTTOM UP MARKETING. NEW YORK: PLUME BOOK, 1990.
MLA-čujuhus (9. p.)RIES AL. BOTTOM UP MARKETING. PLUME BOOK, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.