Gaya APA
      Irawan, C. (2018).
    Esay Conversation Book : Practice your daily conversation anywhere .
    :
  Pusat Kajiann Bahasa.
  
Gaya MLA
      Irawan, Candra.
    "Esay Conversation Book : Practice your daily conversation anywhere".
    
    :
  Pusat Kajiann Bahasa,
  2018.
  Text.