APA (7th ed.) Citation

Butler, C. (1970). Number symbolism / Christopher Butler. Routledge & K. Paul.

Chicago Style (17th ed.) Citation

Butler, Christopher. Number Symbolism / Christopher Butler. London: Routledge & K. Paul, 1970.

MLA (9th ed.) Citation

Butler, Christopher. Number Symbolism / Christopher Butler. Routledge & K. Paul, 1970.

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