Trích dẫn APA

Sampson, N. (1995). English in focus: Level A. H: GD.

Trích dẫn kiểu Chicago

Sampson, Nicholas. English in Focus: Level A. H: GD, 1995.

MLA Trích dẫn

Sampson, Nicholas. English in Focus: Level A. H: GD, 1995.

Warning: These citations may not always be 100% accurate.