Ark, P., & Charles, F. (1956, March). Control of walnut blight: Antibiotic and copper formulations tested in modified spray program in experimental plots in Sun Joaquin County. California Agriculture.
Chicago Style (17th ed.) CitationArk, P., and F. Charles. "Control of Walnut Blight: Antibiotic and Copper Formulations Tested in Modified Spray Program in Experimental Plots in Sun Joaquin County." California Agriculture Mar. 1956.
MLA (9th ed.) CitationArk, P., and F. Charles. "Control of Walnut Blight: Antibiotic and Copper Formulations Tested in Modified Spray Program in Experimental Plots in Sun Joaquin County." California Agriculture, Mar. 1956.
Warning: These citations may not always be 100% accurate.