Bowman, W. D., Hacker, S. D., & Cain, M. L. (2018). Ecology (Fourth edition, International.). Sinauer Associates, Inc., Publishers.
Chicago-viite (17. p.)Bowman, William D., Sally D. Hacker, ja Michael L. Cain. Ecology. Fourth edition, International. Sunderland, MA: Sinauer Associates, Inc., Publishers, 2018.
MLA-viite (9. p.)Bowman, William D., et al. Ecology. Fourth edition, International. Sinauer Associates, Inc., Publishers, 2018.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.