Lanzano, S., & Susan Lanzano. (2006). Focus on grammar. White Plains, NY: Pearson Longman.
Dyfyniad Arddull ChicagoLanzano, Susan, và Susan Lanzano. Focus On Grammar. White Plains, NY: Pearson Longman, 2006.
Dyfyniad MLALanzano, 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.