APA (7th ed.) Citation

Spencer, H. (1958). First principles. De Witt Revolving Fund.

Chicago Style (17th ed.) Citation

Spencer, Herbert. First Principles. New York: De Witt Revolving Fund, 1958.

MLA (9th ed.) Citation

Spencer, Herbert. First Principles. De Witt Revolving Fund, 1958.

Warning: These citations may not always be 100% accurate.