Gaya APA

B.Down, S. et al (1995). Encyclopedia of Radiographic Positioning Volume 2 (vol. 2). Philadephia: WB.Saunders Company.

Gaya MLA

B.Down, Steven. et al. "Encyclopedia of Radiographic Positioning Volume 2". vol. 2 Philadephia: WB.Saunders Company, 1995. Text.