APA   Click to copy
Gross, J. (2011). Social networking websites: A virtual playground for genealogists. Chronicles, 28, 5–7.

Chicago/Turabian   Click to copy
Gross, James. “Social Networking Websites: A Virtual Playground for Genealogists.” Chronicles 28 (2011): 5–7.

MLA   Click to copy
Gross, James. “Social Networking Websites: A Virtual Playground for Genealogists.” Chronicles, vol. 28, 2011, pp. 5–7.

@article{gross2011a,
  title = {Social networking websites: A virtual playground for genealogists},
  year = {2011},
  journal = {Chronicles},
  pages = {5--7},
  volume = {28},
  author = {Gross, James}
}