APA (7th ed.) Citation

Welch, A. J. E. (1941). Intermediate quantitative analysis. University Tutorial Press.

Chicago Style (17th ed.) Citation

Welch, A. J. E. Intermediate Quantitative Analysis. London: University Tutorial Press, 1941.

MLA (8th ed.) Citation

Welch, A. J. E. Intermediate Quantitative Analysis. University Tutorial Press, 1941.