Cita APA (7a ed.)
Spearman, C. (1973). The nature of 'intelligence' and the principles of cognition. Arno.
Cita Chicago Style (17a ed.)
Spearman, Charles. The Nature of 'Intelligence' and the Principles of Cognition. New York: Arno, 1973.
Cita MLA (9a ed.)
Spearman, Charles. The Nature of 'Intelligence' and the Principles of Cognition. Arno, 1973.
Precaución: Estas citas no son 100% exactas.