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

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

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

@article{einstein1905a,
  title = {Does the Inertia of a Body Depend Upon Its Energy Content?},
  year = {1905},
  journal = {Annalen der Physik},
  pages = {639-641},
  author = {Einstein, Albert}
}