APA   Click to copy
Marquis, R. J. (1984). Leaf herbivores decrease fitness of a tropical plant. Science, 226, 537–539.

Chicago/Turabian   Click to copy
Marquis, Robert J. “Leaf Herbivores Decrease Fitness of a Tropical Plant.” Science 226 (1984): 537–539.

MLA   Click to copy
Marquis, Robert J. “Leaf Herbivores Decrease Fitness of a Tropical Plant.” Science, vol. 226, American Association for the Advancement of Science, 1984, pp. 537–39.

@article{marquis1984a,
  title = {Leaf herbivores decrease fitness of a tropical plant},
  year = {1984},
  journal = {Science},
  pages = {537--539},
  publisher = {American Association for the Advancement of Science},
  volume = {226},
  author = {Marquis, Robert J}
}