APA (7th ed.) Citation

Da Graça, J. V. (1985). Heads of state and government. New York University Press.

Chicago Style (17th ed.) Citation

Da Graça, John V. Heads of State and Government. New York, N.Y.: New York University Press, 1985.

MLA (9th ed.) Citation

Da Graça, John V. Heads of State and Government. New York University Press, 1985.