APA   Click to copy
Kumar, A., Longino, J. T., Colwell, R. K., & O'Donnell, S. (2009). Elevational patterns of diversity and abundance of eusocial paper wasps (Vespidae) in Costa Rica. Biotropica, 41, 338–346.

Chicago/Turabian   Click to copy
Kumar, Anjali, John T Longino, Robert K Colwell, and Sean O'Donnell. “Elevational Patterns of Diversity and Abundance of Eusocial Paper Wasps (Vespidae) in Costa Rica.” Biotropica 41 (2009): 338–346.

MLA   Click to copy
Kumar, Anjali, et al. “Elevational Patterns of Diversity and Abundance of Eusocial Paper Wasps (Vespidae) in Costa Rica.” Biotropica, vol. 41, Blackwell Publishing Inc Malden, USA, 2009, pp. 338–46.

@article{kumar2009a,
  title = {Elevational patterns of diversity and abundance of eusocial paper wasps (Vespidae) in Costa Rica},
  year = {2009},
  journal = {Biotropica},
  pages = {338--346},
  publisher = {Blackwell Publishing Inc Malden, USA},
  volume = {41},
  author = {Kumar, Anjali and Longino, John T and Colwell, Robert K and O'Donnell, Sean}
}