PRYOR FREED. (1987). ENERGETIC MANAGER. PRENTICE -HALL INTERNATIONAL, INC.
Chicago-čujuhus (17. p.)PRYOR FREED. ENERGETIC MANAGER. NEW JERSEY: PRENTICE -HALL INTERNATIONAL, INC, 1987.
MLA-čujuhus (9. p.)PRYOR FREED. ENERGETIC MANAGER. PRENTICE -HALL INTERNATIONAL, INC, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.