6Horwitz EK, Horwitz MB & Cope J, Foreign language classroom anxiety. The Modern Language Journal, 1986,70:125- 132
7Horwitz EK, Horwitz M B & Cope J, Foreign language classroom anxiety. In EK Horwitz & DJ Yong (Ed.). Foreign Language Anxiety: Form Theory and Research to Classroom Implication. Englewood Cliffs, NJ :Prentice Hall,1991 :27 - 36
8Horwitz EK, & Yong DJ, (Ed.). Foreign Language Anxiety: From Theory and Research to Classroom Implication.Englewood Cliffs, NJ: Prentice Hall, 1991
9Price ML, The subjective experience of foreign language anxiety: Interviews with high anxious student. In EK Horwitz,& DJ Yong(Ed. ). Foreign Language Anxiety:From Theory and Research to Classroom Implication. Englewood Cliffs, NJ :Prentice Hall, 1991:101 - 108
10Aida Y,Examination of Horwitz, Horwitz,and Cope's foreign language anxiety: The Case of Japanese. The Modern Laguage Journal,1994,78(2):155 - 168