Heller, K., Price, R. H., Reinharz, S., Riger, S., Wandersman, A., & D'Aunno, T. A. (1984). Psychology and community change: Challenges of the future (2nd ed.). Brooks/Cole Publishing COmpany.
Lua i Stíl Chicago (17ú heag.)Heller, Kenneth, Richard H. Price, Shulamit Reinharz, Stephanie Riger, Abraham Wandersman, agus Thomas A. D'Aunno. Psychology and Community Change: Challenges of the Future. 2nd ed. Pacific Grove, Cal: Brooks/Cole Publishing COmpany, 1984.
Lua MLA (9ú heag.)Heller, Kenneth, et al. Psychology and Community Change: Challenges of the Future. 2nd ed. Brooks/Cole Publishing COmpany, 1984.
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