APA (7th ed.) Citation

DeGraaf, D., & Jordan, D. (2003). Social Capital. Parks & Recreation, 38(12), 20.

Chicago Style (17th ed.) Citation

DeGraaf, Don, and Deb Jordan. "Social Capital." Parks & Recreation 38, no. 12 (2003): 20.

MLA (9th ed.) Citation

DeGraaf, Don, and Deb Jordan. "Social Capital." Parks & Recreation, vol. 38, no. 12, 2003, p. 20.