George Washington University. Population Information Program, George Washington University. Dept. of Medical and Public Affairs, & Johns Hopkins University. Population Information Program. (1973). Population reports. Dept. of Medical and Public Affairs, George Washington University Medical Center.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)George Washington University. Population Information Program, George Washington University. Dept. of Medical and Public Affairs, và Johns Hopkins University. Population Information Program. Population Reports. Washington, D.C.: Dept. of Medical and Public Affairs, George Washington University Medical Center, 1973.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)George Washington University. Population Information Program, et al. Population Reports. Dept. of Medical and Public Affairs, George Washington University Medical Center, 1973.