楊謹忠

打造新人脈圈：公關＠n-line by: 菲利浦(Phillips, David); 楊謹忠 (Language materials, printed) , [譯]

跟黑道家族學領導 by: 西姆塞爾(Himsel, Deborrah); 楊謹忠 (Language materials, printed) , [譯]

一鳴驚人 by: 塞勒(Thaler, Linda Kaplan); 馬歇爾(Marshall, Delia); 楊謹忠; 科瓦爾(Koval, Robin) (Language materials, printed) , [譯]