Laufer, I., & Levine, M. S. (1992). Double contrast gastrointestinal radiology. Saunders Company.
Chicago Style aipamenaLaufer, Igor, and Marc S. Levine. Double Contrast Gastrointestinal Radiology. Philadelphia: Saunders Company, 1992.
MLA aipamenaLaufer, Igor, and Marc S. Levine. Double Contrast Gastrointestinal Radiology. Saunders Company, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.