Da Graça, J. V. (1985). Heads of state and government. New York University Press.
Chicago Style (17th ed.) CitationDa Graça, John V. Heads of State and Government. New York, N.Y.: New York University Press, 1985.
MLA (9th ed.) CitationDa Graça, John V. Heads of State and Government. New York University Press, 1985.
Warning: These citations may not always be 100% accurate.