1. Professional discourse in winning images: objectivity and professional boundaries in environmental news images in the World Press Photo contest, 1992–2011 Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Liu, Yang (author) Format: Journal article Publication Date: 2013 Published: International Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 156 Document Number: D07360 Journal Title: Chinese Journal of Communication Journal Title Details: 6(4) : 456-481