Burchfield, J., Jacobs, M., & Kokrda, K. (1997). Photography in focus (5th ed.). NTC Pub. Group.
Lua i Stíl Chicago (17ú heag.)Burchfield, Jerry, Mark Jacobs, agus Ken Kokrda. Photography in Focus. 5th ed. Lincolnwood, Ill: NTC Pub. Group, 1997.
Lua MLA (9ú heag.)Burchfield, Jerry, et al. Photography in Focus. 5th ed. NTC Pub. Group, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.