Citação norma APA

Valenta, J. (1980). The Soviet invasion of Afghanistan: The difficulty of knowing where to stop. Orbis. - publ. by the Foreign Policy Research Institute of the University of Pennsylvania.

Citação norma Chicago

Valenta, Jiří. "The Soviet Invasion of Afghanistan: The Difficulty of Knowing Where to Stop." Orbis. - Publ. by the Foreign Policy Research Institute of the University of Pennsylvania 1980.

Citação norma MLA

Valenta, Jiří. "The Soviet Invasion of Afghanistan: The Difficulty of Knowing Where to Stop." Orbis. - Publ. by the Foreign Policy Research Institute of the University of Pennsylvania, 1980.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.