APA   Click to copy
Greenstone, M. H., Colwell, R. K., & Pitelka, F. A. (1972). Ecological Assessment. Science, 177, 210–210.

Chicago/Turabian   Click to copy
Greenstone, Matthew H, Robert K Colwell, and Frank A Pitelka. “Ecological Assessment.” Science 177 (1972): 210–210.

MLA   Click to copy
Greenstone, Matthew H., et al. “Ecological Assessment.” Science, vol. 177, American Association for the Advancement of Science, 1972, pp. 210–10.

@article{greenstone1972a,
  title = {Ecological Assessment},
  year = {1972},
  journal = {Science},
  pages = {210--210},
  publisher = {American Association for the Advancement of Science},
  volume = {177},
  author = {Greenstone, Matthew H and Colwell, Robert K and Pitelka, Frank A}
}