Dyfyniad APA

Walker, E., & Elsworth, S. (1994). Grammar practice for intermediate students: With answer key. Burnt Mill: Longman.

Dyfyniad Arddull Chicago

Walker, E., và S. Elsworth. Grammar Practice for Intermediate Students: With Answer Key. Burnt Mill: Longman, 1994.

Dyfyniad MLA

Walker, E., và S. Elsworth. Grammar Practice for Intermediate Students: With Answer Key. Burnt Mill: Longman, 1994.

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