DICKSON D E N. (1991). IMPROVE YOUR BUSINESS: HANDBOOK. OXFORD UNIVERSITY PRESS.
Chicago-čujuhus (17. p.)DICKSON D E N. IMPROVE YOUR BUSINESS: HANDBOOK. MUMBAI MADRAS: OXFORD UNIVERSITY PRESS, 1991.
MLA-čujuhus (9. p.)DICKSON D E N. IMPROVE YOUR BUSINESS: HANDBOOK. OXFORD UNIVERSITY PRESS, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.