Harvard:
Jacobsen, T. 1939, "The Assumed Conflict between Sumerians and Semites in Early Mesopotamian History", in Journal of the American Oriental Society, vol. 59, no. 4, pp. 485--495. American Oriental Society.
APA:
Jacobsen, T. (1939). The Assumed Conflict between Sumerians and Semites in Early Mesopotamian History. Journal of the American Oriental Society, 59 (4) , 485--495. American Oriental Society.
Chicago:
Jacobsen, Thorkild. 1939. "The Assumed Conflict Between Sumerians and Semites in Early Mesopotamian History." In Journal of the American Oriental Society, 59 , no. 4: 485--495. American Oriental Society.
MLA:
Jacobsen, Thorkild. "The Assumed Conflict Between Sumerians and Semites in Early Mesopotamian History." Journal of the American Oriental Society. 59.4 (1939): 485--495.
Citation within the text:
(Jacobsen 1939)
Zotero:
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BibTeX:
@article{jacobsen1939assumed,
  source = {jstor},
  ISSN = {0003-0279},
  author = {Jacobsen, Thorkild},
  copyright = {Copyright 1939 American Oriental Society},
  journal = {Journal of the American Oriental Society},
  jstor_articletype = {Full Length Article},
  jstor_date = {193912},
  jstor_formatteddate = {Dec., 1939},
  month = {dec},
  number = {4},
  pages = {485--495},
  publisher = {American Oriental Society},
  title = {The Assumed Conflict between Sumerians and Semites in Early Mesopotamian History},
  url = {http://links.jstor.org/sici?sici=0003-0279%28193912%2959%3A4%3C485%3ATACBSA%3E2.0.CO%3B2-X},
  volume = {59},
  year = {1939},
}