ebrary, Inc, & Lockeretz, W. (2007). Organic farming: An international history. CABI.
Chicago-čujuhus (17. p.)ebrary, Inc, juo William Lockeretz. Organic Farming: An International History. Cambridge, MA: CABI, 2007.
MLA-čujuhus (9. p.)ebrary, Inc, juo William Lockeretz. Organic Farming: An International History. CABI, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.