APA (7th ed.) Citation

Ratnayaka, D. D., Brandt, M. J., Johnson, K. M., & Twort, A. C. Twort's water supply.

Chicago Style (17th ed.) Citation

Ratnayaka, Don D., Malcolm J. Brandt, K. Michael Johnson, and A. C. Twort. Twort's Water Supply.

MLA (8th ed.) Citation

Ratnayaka, Don D., et al. Twort's Water Supply.