Allaby, M. (1989). Green facts. Reed international books.
Chicago-čujuhus (17. p.)Allaby, Michael. Green Facts. London: Reed international books, 1989.
MLA-čujuhus (9. p.)Allaby, Michael. Green Facts. Reed international books, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.