APA (7th ed.) Citation

Angell, J. R. (1918). An introduction to psychology. H. Holt and Co.

Chicago Style (17th ed.) Citation

Angell, James Rowland. An Introduction to Psychology. New York: H. Holt and Co, 1918.

MLA (9th ed.) Citation

Angell, James Rowland. An Introduction to Psychology. H. Holt and Co, 1918.