Dyfyniad APA

Porter, C., Minicz, E., & Cross, C. (1991). Places to know in the U. S. A: An interactive ESL reader. Scott Foresman.

Dyfyniad Arddull Chicago

Porter, Catherine, Elizabeth Minicz, and Carole Cross. Places to Know in the U. S. A: An Interactive ESL Reader. Glenview: Scott Foresman, 1991.

Dyfyniad MLA

Porter, Catherine, et al. Places to Know in the U. S. A: An Interactive ESL Reader. Scott Foresman, 1991.

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