(1987). 1986-87 Directory of professional workers in state agricultural experiment stations and other cooperating state institutions. Washington: U.S Goverment Printing Office.
Trích dẫn kiểu Chicago1986-87 Directory of Professional Workers in State Agricultural Experiment Stations and Other Cooperating State Institutions. Washington: U.S Goverment Printing Office, 1987.
Trích dẫn MLA1986-87 Directory of Professional Workers in State Agricultural Experiment Stations and Other Cooperating State Institutions. Washington: U.S Goverment Printing Office, 1987.
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