Bretland, P. M. (1978). Essentials of radiology: For medical students and others who find looking at radiographs very difficult. Butterworths.
Chicago-Zitierstil (17. Ausg.)Bretland, Peter M. Essentials of Radiology: For Medical Students and Others Who Find Looking at Radiographs Very Difficult. London u.a: Butterworths, 1978.
MLA-Zitierstil (9. Ausg.)Bretland, Peter M. Essentials of Radiology: For Medical Students and Others Who Find Looking at Radiographs Very Difficult. Butterworths, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.