APA
Nelson S. W., Freimanis A. K. & Wiot J. F. (1973). Gastrointestinal tract disease syllabus. Chicago: Committee on Professional Self-Evaluation and Continuing Education, Commission on Diagnostic Radiology, American College of Radiology.
Chicago
Nelson Sidney W, Freimanis Atis K and Wiot Jerome F. 1973. Gastrointestinal tract disease syllabus. Chicago: Committee on Professional Self-Evaluation and Continuing Education, Commission on Diagnostic Radiology, American College of Radiology.
Harvard
Nelson S. W., Freimanis A. K. and Wiot J. F. (1973). Gastrointestinal tract disease syllabus. Chicago: Committee on Professional Self-Evaluation and Continuing Education, Commission on Diagnostic Radiology, American College of Radiology.
MLA
Nelson Sidney W, Freimanis Atis K and Wiot Jerome F. Gastrointestinal tract disease syllabus. Chicago: Committee on Professional Self-Evaluation and Continuing Education, Commission on Diagnostic Radiology, American College of Radiology. 1973.