APA (7th ed.) Citation

Shawcross, W. (1990). Dubcek (Rev. and updated ed.). Simon & Schuster.

Chicago Style (17th ed.) Citation

Shawcross, William. Dubcek. Rev. and updated ed. New York: Simon & Schuster, 1990.

MLA (9th ed.) Citation

Shawcross, William. Dubcek. Rev. and updated ed. Simon & Schuster, 1990.