Gaya APA
      1505116728, M, K, A, /. (2019).
    The Effect Of Concept Mapping Strategy On The Ability Of The Second Year Students Of SMA PGRI Pekanbaru In Writing Explanation Text .
    Pekanbaru:
  Universitas Riau - FKIP – Pendidikan Bahasa Inggris.
  
Gaya MLA
      1505116728, Mella, Kepriyanti, Adwas, /.
    "The Effect Of Concept Mapping Strategy On The Ability Of The Second Year Students Of SMA PGRI Pekanbaru In Writing Explanation Text".
    
    Pekanbaru:
  Universitas Riau - FKIP – Pendidikan Bahasa Inggris,
  2019.
  CD Skripsi.