APA (7th ed.) Citation
Gregory, A., Hartley, J., & Lewis, D. (1969). Basic statistics. Methuen.
Chicago Style (17th ed.) Citation
Gregory, A.H, J.R Hartley, and D.G Lewis. Basic Statistics. London: Methuen, 1969.
MLA (9th ed.) Citation
Gregory, A.H, et al. Basic Statistics. Methuen, 1969.
Warning: These citations may not always be 100% accurate.