APA (7th ed.) Citation

200121 Syers, J. K., Armstrong, D. E., & Harris, R. F. Phosphate chemistry in lake sediments.

Chicago Style (17th ed.) Citation

200121 Syers, J. K., D. E. Armstrong, and R. F. Harris. Phosphate Chemistry in Lake Sediments.

MLA (9th ed.) Citation

200121 Syers, J. K., et al. Phosphate Chemistry in Lake Sediments.