Dyfyniad APA

De Coy, R. H., & Kahn, R. (1969). Robert H. De Coy's This is progress: The blue book manual of Nigritian history : American descendants of African origin. Nigritian.

Dyfyniad Arddull Chicago

De Coy, Robert H., and Roselle Kahn. Robert H. De Coy's This Is Progress: The Blue Book Manual of Nigritian History : American Descendants of African Origin. [Los Angeles]: Nigritian, 1969.

Dyfyniad MLA

De Coy, Robert H., and Roselle Kahn. Robert H. De Coy's This Is Progress: The Blue Book Manual of Nigritian History : American Descendants of African Origin. Nigritian, 1969.

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