APA
Richardson Lloyd T, . (1957). Effect of insecticides and herbicides applied to soil on the development of plant diseases.1. The seedling disease of barley caused by helminthosporium sativum P.K.&B. : Canadian Joural of Plant Science.
Chicago
Richardson Lloyd T, . 1957. Effect of insecticides and herbicides applied to soil on the development of plant diseases.1. The seedling disease of barley caused by helminthosporium sativum P.K.&B. : Canadian Joural of Plant Science.
Harvard
Richardson Lloyd T, . (1957). Effect of insecticides and herbicides applied to soil on the development of plant diseases.1. The seedling disease of barley caused by helminthosporium sativum P.K.&B. : Canadian Joural of Plant Science.
MLA
Richardson Lloyd T, . Effect of insecticides and herbicides applied to soil on the development of plant diseases.1. The seedling disease of barley caused by helminthosporium sativum P.K.&B. : Canadian Joural of Plant Science. 1957.