Dyfyniad APA

George Washington University. Population Information Program, George Washington University. Dept. of Medical and Public Affairs, & Johns Hopkins University. Population Information Program. Population reports. Public Information Program, Johns Hopkins University.

Dyfyniad Arddull Chicago

George Washington University. Population Information Program, George Washington University. Dept. of Medical and Public Affairs, and Johns Hopkins University. Population Information Program. Population Reports. Baltimore, Maryland: Public Information Program, Johns Hopkins University.

Dyfyniad MLA

George Washington University. Population Information Program, et al. Population Reports. Public Information Program, Johns Hopkins University.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.