APA Citation

Walker, D. (2007). The Bigger picture: 30 years of portraits. Washington, D.C.: National Geographic.

Chicago Style Citation

Walker, Diana. The Bigger Picture: 30 Years of Portraits. Washington, D.C.: National Geographic, 2007.

MLA Citation

Walker, Diana. The Bigger Picture: 30 Years of Portraits. Washington, D.C.: National Geographic, 2007.

Warning: These citations may not always be 100% accurate.