APA Style

United States. Department of the Interior, Washington, DC., Spulber- Nicolas. (). The American economy the struggle for supremacy in the 21st century . : .

Chicago Style

United States. Department of the Interior, Washington, DC., Spulber- Nicolas. The American economy the struggle for supremacy in the 21st century. : , . .

MLA Style

United States. Department of the Interior, Washington, DC., Spulber- Nicolas. The American economy the struggle for supremacy in the 21st century. : , . .

Turabian Style

United States. Department of the Interior, Washington, DC., Spulber- Nicolas. The American economy the struggle for supremacy in the 21st century. : , . .