The Radiological Society of North America. (1981). Radiology Volume 138 number 2 February 1981. The radiological society.
Cita Chicago (17th ed.)The Radiological Society of North America. Radiology Volume 138 Number 2 February 1981. : The radiological society, 1981.
Cita MLA (9th ed.)The Radiological Society of North America. Radiology Volume 138 Number 2 February 1981. The radiological society, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.