Gaya APA

The Official American Board of Medical Specialties (ABMS) Directory of Board certified Medical Specialists Vol.3. (1992). Illinois: American Board of Medical Specialisties Research.

Gaya MLA

The Official American Board of Medical Specialties (ABMS) Directory of Board certified Medical Specialists Vol.3. 4th ed. Illinois: American Board of Medical Specialisties Research, 1992. print.