APA (7th ed.) Citation

Levens, A. S. (1965). Graphical methods in research. Wiley.

Chicago Style (17th ed.) Citation

Levens, Alexander S. Graphical Methods in Research. New York: Wiley, 1965.

MLA (9th ed.) Citation

Levens, Alexander S. Graphical Methods in Research. Wiley, 1965.

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