APA   Click to copy
Karle, I. L., Gopi, H. N., & Balaram, P. (2003). Crystal structure of a hydrophobic 19-residue peptide helix containing three centrally located D amino acids. Proceedings of the National Academy of Sciences, 100, 13946–13951.

Chicago/Turabian   Click to copy
Karle, Isabella L, Hosahudya N Gopi, and Padmanabhan Balaram. “Crystal Structure of a Hydrophobic 19-Residue Peptide Helix Containing Three Centrally Located D Amino Acids.” Proceedings of the National Academy of Sciences 100 (2003): 13946–13951.

MLA   Click to copy
Karle, Isabella L., et al. “Crystal Structure of a Hydrophobic 19-Residue Peptide Helix Containing Three Centrally Located D Amino Acids.” Proceedings of the National Academy of Sciences, vol. 100, National Acad Sciences, 2003, pp. 13946–51.

@article{karle2003a,
  title = {Crystal structure of a hydrophobic 19-residue peptide helix containing three centrally located D amino acids},
  year = {2003},
  journal = {Proceedings of the National Academy of Sciences},
  pages = {13946--13951},
  publisher = {National Acad Sciences},
  volume = {100},
  author = {Karle, Isabella L and Gopi, Hosahudya N and Balaram, Padmanabhan}
}