Dyfyniad APA

Lanzano, S., & Susan Lanzano. (2006). Focus on grammar. White Plains, NY: Pearson Longman.

Dyfyniad Arddull Chicago

Lanzano, Susan, và Susan Lanzano. Focus On Grammar. White Plains, NY: Pearson Longman, 2006.

Dyfyniad MLA

Lanzano, Susan, và Susan Lanzano. Focus On Grammar. White Plains, NY: Pearson Longman, 2006.

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