Hart, W. (1972). Study guide for agricultural pest control advisers on nematodes and nematicides. University of California.
Chicago-referens (17:e uppl.)Hart, Winfield. Study Guide for Agricultural Pest Control Advisers on Nematodes and Nematicides. Berkeley: University of California, 1972.
MLA-referens (9:e uppl.)Hart, Winfield. Study Guide for Agricultural Pest Control Advisers on Nematodes and Nematicides. University of California, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.