Dyfyniad APA

Ritchie, D. A. (1999). American history: The modern era since 1865. New York: Glencoe/McGraw-Hill.

Dyfyniad Arddull Chicago

Ritchie, Donald A. American History: The Modern Era Since 1865. New York: Glencoe/McGraw-Hill, 1999.

Dyfyniad MLA

Ritchie, Donald A. American History: The Modern Era Since 1865. New York: Glencoe/McGraw-Hill, 1999.

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