(1987). 1986-87 Directory of professional workers in state agricultural experiment stations and other cooperating state institutions. Washington: U.S Goverment Printing Office.
Citação norma Chicago1986-87 Directory of Professional Workers in State Agricultural Experiment Stations and Other Cooperating State Institutions. Washington: U.S Goverment Printing Office, 1987.
Citação norma MLA1986-87 Directory of Professional Workers in State Agricultural Experiment Stations and Other Cooperating State Institutions. Washington: U.S Goverment Printing Office, 1987.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.