Gaya APA
Harefa, Andrias. (2009).
Ubah Amarahmu Jadi Tawa .
:
Gramedia Pustaka Utama.
Gaya Chicago
Harefa, Andrias.
Ubah Amarahmu Jadi Tawa.
:
Gramedia Pustaka Utama,
2009.
Non-fiction.
Gaya MLA
Harefa, Andrias.
Ubah Amarahmu Jadi Tawa.
:
Gramedia Pustaka Utama,
2009.
Non-fiction.
Gaya Turabian
Harefa, Andrias.
Ubah Amarahmu Jadi Tawa.
:
Gramedia Pustaka Utama,
2009.
Non-fiction.