APA (7th ed.) Citation

Wu, C. W. (2024). Pandigital and penholodigital numbers.

Chicago Style (17th ed.) Citation

Wu, Chai Wah. Pandigital and Penholodigital Numbers. 2024.

MLA (9th ed.) Citation

Wu, Chai Wah. Pandigital and Penholodigital Numbers. 2024.

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