Hartley, W. H., & Vincent, W. S. (1970). American civics (3rd ed.). Harcourt brace jovanovich.
Chicagoスタイル(17版)引用形式Hartley, William H., , William S. Vincent. American Civics. 3rd ed. New York: Harcourt brace jovanovich, 1970.
MLA(9版)引用形式Hartley, William H., , William S. Vincent. American Civics. 3rd ed. Harcourt brace jovanovich, 1970.
警告: この引用は必ずしも正確ではありません.