APA (7th ed.) Citation

Fischer, L., & Johnston, W. H. (1931). The structure of thought: A survey of natural philosophy. G. Allen & Unwin ltd..

Chicago Style (17th ed.) Citation

Fischer, Ludwig, and Walter Henry Johnston. The Structure of Thought: A Survey of Natural Philosophy. London: G. Allen & Unwin ltd., 1931.

MLA (9th ed.) Citation

Fischer, Ludwig, and Walter Henry Johnston. The Structure of Thought: A Survey of Natural Philosophy. G. Allen & Unwin ltd., 1931.