Sulistyowati, T. (2011). The Impact of Teaching Listening Comprehension by Audio Video and Audio Picture Aids on The Third Semester Students' Listening Proficiencies of English Education Department Students of Muria Kudus University in The Academic Year 2009/2010. Lembaga Penelitian Universitas Muria Kudus.

Sulistyowati, Titis. The Impact of Teaching Listening Comprehension By Audio Video and Audio Picture Aids On The Third Semester Students' Listening Proficiencies of English Education Department Students of Muria Kudus University in The Academic Year 2009/2010. Lembaga Penelitian Universitas Muria Kudus, 2011.

Sulistyowati, Titis. The Impact of Teaching Listening Comprehension By Audio Video and Audio Picture Aids On The Third Semester Students' Listening Proficiencies of English Education Department Students of Muria Kudus University in The Academic Year 2009/2010. Lembaga Penelitian Universitas Muria Kudus, 2011.