APA

Popple P. R., Leighninger L., . (2011). The policy-based profession: an introduction to social welfare policy analysis for social workers. Boston, MA: Allyn & Bacon.

Chicago

Popple Philip R, Leighninger Leslie, . 2011. The policy-based profession: an introduction to social welfare policy analysis for social workers. Boston, MA: Allyn & Bacon.

Harvard

Popple P. R., Leighninger L., . (2011). The policy-based profession: an introduction to social welfare policy analysis for social workers. Boston, MA: Allyn & Bacon.

MLA

Popple Philip R, Leighninger Leslie, . The policy-based profession: an introduction to social welfare policy analysis for social workers. Boston, MA: Allyn & Bacon. 2011.