APA   Click to copy
Clapp, J., & Sen, A. (1999). Development as freedom.

Chicago/Turabian   Click to copy
Clapp, Jennifer, and Amartya Sen. “Development as Freedom” (1999).

MLA   Click to copy
Clapp, Jennifer, and Amartya Sen. Development as Freedom. 1999.

@article{jennifer1999a,
  title = {Development as freedom},
  year = {1999},
  author = {Clapp, Jennifer and Sen, Amartya}
}