Lua APA (7ú heag.)

(美)Michael A. Putlack,(加)Stephen Poirier,(美)Tony Covello编著. (2017). 托福考试专项高分突破.口语.Speaking. 中国宇航出版社.

Lua i Stíl Chicago (17ú heag.)

(美)Michael A. Putlack,(加)Stephen Poirier,(美)Tony Covello编著. 托福考试专项高分突破.口语.Speaking. 中国宇航出版社, 2017.

Lua MLA (8ú heag.)

(美)Michael A. Putlack,(加)Stephen Poirier,(美)Tony Covello编著. 托福考试专项高分突破.口语.Speaking. 中国宇航出版社, 2017.

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