APA (7th ed.) Citation

249433 Moran, J. M., Morgan, M. D., & Wiersma, J. H. (1973). An introduction to environmental sciences. Boston : Little and brown.

Chicago Style (17th ed.) Citation

249433 Moran, Joseph M., Michael D. Morgan, and James H. Wiersma. An Introduction to Environmental Sciences. Boston : Little and brown, 1973.

MLA (9th ed.) Citation

249433 Moran, Joseph M., et al. An Introduction to Environmental Sciences. Boston : Little and brown, 1973.