Dyfyniad APA
ebrary, Inc, & Wendel, H. (2002). State profiles: The population and economy of each U.S. state. Bernan Press.
Dyfyniad Arddull Chicago
ebrary, Inc, and Helmut Wendel. State Profiles: The Population and Economy of Each U.S. State. Lanham, MD: Bernan Press, 2002.
Dyfyniad MLA
ebrary, Inc, and Helmut Wendel. State Profiles: The Population and Economy of Each U.S. State. Bernan Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.