APA (7th ed.) Citation

Cheam, V., & Chau, A. S. Y. (1985). Sodium, potassium, magnesium, calcium and hardness in natural and spiked water samples. Environment Canada.

Chicago Style (17th ed.) Citation

Cheam, V., and A. S. Y. Chau. Sodium, Potassium, Magnesium, Calcium and Hardness in Natural and Spiked Water Samples. Burlington, Ont.: Environment Canada, 1985.

MLA (9th ed.) Citation

Cheam, V., and A. S. Y. Chau. Sodium, Potassium, Magnesium, Calcium and Hardness in Natural and Spiked Water Samples. Environment Canada, 1985.