Burchfield, J., Jacobs, M., & Kokrda, K. (1997). Photography in focus (Fifth edition.). NTC Pub. Group.
Lua i Stíl Chicago (17ú heag.)Burchfield, Jerry, Mark Jacobs, agus Ken Kokrda. Photography in Focus. Fifth edition. Lincolnwood, Ill.: NTC Pub. Group, 1997.
Lua MLA (8ú heag.)Burchfield, Jerry, et al. Photography in Focus. Fifth edition. NTC Pub. Group, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.