APA

Spearman C. E., . (1927). The abilities of man: their nature and measurement. New York: The MacMillan.

Chicago

Spearman Charles Edward, . 1927. The abilities of man: their nature and measurement. New York: The MacMillan.

Harvard

Spearman C. E., . (1927). The abilities of man: their nature and measurement. New York: The MacMillan.

MLA

Spearman Charles Edward, . The abilities of man: their nature and measurement. New York: The MacMillan. 1927.