Spearman, C. E. (1923). The nature of Intelligence and the principles of cognition. MacMillan and Co.
Chicago Style (17th ed.) CitationSpearman, Charles Edward. The Nature of Intelligence and the Principles of Cognition. London: MacMillan and Co, 1923.
MLA (9th ed.) CitationSpearman, Charles Edward. The Nature of Intelligence and the Principles of Cognition. MacMillan and Co, 1923.
Warning: These citations may not always be 100% accurate.