LAWRENS SANDERS. (1985). TANGENT FACTOR. BERKLEY BOOKS.
Chicago-čujuhus (17. p.)LAWRENS SANDERS. TANGENT FACTOR. NEW YORK: BERKLEY BOOKS, 1985.
MLA-čujuhus (9. p.)LAWRENS SANDERS. TANGENT FACTOR. BERKLEY BOOKS, 1985.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.