APA (7th ed.) Citation

Nation & Fischer, L. (1937). The war in Spain. [New York] : The Nation.

Chicago Style (17th ed.) Citation

Nation and Louis Fischer. The War in Spain. [New York] : The Nation, 1937.

MLA (8th ed.) Citation

Nation and Louis Fischer. The War in Spain. [New York] : The Nation, 1937.

Warning: These citations may not always be 100% accurate.