APA   Click to copy
Einstein, A. (1905). Does the Inertia of a Body Depend Upon Its Energy Content? Annalen Der Physik, 18, 639–641.

Chicago/Turabian   Click to copy
Einstein, Albert. “Does the Inertia of a Body Depend Upon Its Energy Content?” Annalen der Physik 18 (November 21, 1905): 639–641.

MLA   Click to copy
Einstein, Albert. “Does the Inertia of a Body Depend Upon Its Energy Content?” Annalen Der Physik, vol. 18, Nov. 1905, pp. 639–41.

@article{albert1905a,
  title = {Does the Inertia of a Body Depend Upon Its Energy Content?},
  year = {1905},
  month = nov,
  day = {21},
  journal = {Annalen der Physik},
  pages = {639-641},
  volume = {18},
  author = {Einstein, Albert},
  month_numeric = {11}
}