APA   Click to copy
Marquis, R. J. (1988). Phenological variation in the neotropical understory shrub Piper arielanum: causes and consequences. Ecology, 69, 1552–1565.

Chicago/Turabian   Click to copy
Marquis, Robert J. “Phenological Variation in the Neotropical Understory Shrub Piper Arielanum: Causes and Consequences.” Ecology 69 (1988): 1552–1565.

MLA   Click to copy
Marquis, Robert J. “Phenological Variation in the Neotropical Understory Shrub Piper Arielanum: Causes and Consequences.” Ecology, vol. 69, Wiley Online Library, 1988, pp. 1552–65.

@article{marquis1988a,
  title = {Phenological variation in the neotropical understory shrub Piper arielanum: causes and consequences},
  year = {1988},
  journal = {Ecology},
  pages = {1552--1565},
  publisher = {Wiley Online Library},
  volume = {69},
  author = {Marquis, Robert J}
}