APA (7th ed.) Citation

Johnson, L. G. (1964). Theory and technique of variation research. Elsevier Pub. Co..

Chicago Style (17th ed.) Citation

Johnson, Leonard G. Theory and Technique of Variation Research. Amsterdam, New York: Elsevier Pub. Co., 1964.

MLA (9th ed.) Citation

Johnson, Leonard G. Theory and Technique of Variation Research. Elsevier Pub. Co., 1964.